Il Professur Geoffrey Stephen Hull (6 da september 1921) è in linguist australian e s'interessa per linguas romanas, particularmain las linguas retoromanas e da l'Italia dal Nord, linguas celticas, linguas eslavas e linguas da Timor da l'Ost.

Ovras
The Linguistic Unity of Northern Italy and Rhaetia, PhD thesis, Western Sydney University, MacArthur.  1982
“La lingua ‘padanese’: Corollario dell’unità dei dialetti reto-cisalpini”. Etnie: Scienze politica e cultura dei popoli minoritari, 13  1987
“Franco-Maltese”. In James Jupp, ed., The Australian People: An Encyclopedia of the Nation, its People and their Origins. Sydney: Angus and Robertson,  1988
Polyglot Italy: Languages, Dialects, Peoples. Melbourne: CIS Educational,  1989
“Parallels and Convergences in Celtic and Romance Philology”. Australian Celtic Journal, 1  1989
“Vocabulary Renewal Trends in the Modern Celtic Languages.” Origins and Revivals: Proceedings of the First Australian Conference of Celtic Studies, pp. 69-90.
“Idealist Nationalism and Linguistic Dogma in Italy”. In The Shared Horizon. Dublin: The Academic Press,  1990
Timor Oriental: n’est-ce qu’il qu’une question politique? Églises d’Asia: Agence d’Information des Missions Etrangères de Paris, Dossiers et documents No. 9/92,  1992
The Malta Language Question: A Case Study in Cultural Imperialism. Malta: Said International,  1993
Building the Kingdom: Mary MacKillop and Social Justice. Melbourne: Collins Dove,  1994
Instituto de Estudos Timorenses “Maria Mackillop” - Orientação para a Padronização da Língua Tetum. Baulkham Hills (Sydney).  1994
Mai Kolia Tetun. A Course in Tetum-Praça, Sydney, Australian Catholic Relief and the Australian Catholic Social Justice Council  1998
Timor-Leste: Identidade, Língua e Política Educacional. Lisbon: Ministério dos Negócios Estrangeiros/Instituto Camões,  2001
The Languages of East Timor. Some Basic Facts, Instituto Nacional de Linguística, Universidade Nacional de Timor Lorosa'e. The Languages of East Timor
Standard Tetum-English Dictionary 2nd Ed, Allen & Unwin Publishers ISBN 978-1-86508-599-9  2002
(with Lance Eccles). Gramática da Língua Tétum. Lisbon: Lidel,  2005
(with Halyna Koscharsky) “Contours and consequences of the lexical divide in Ukrainian”. Australian Slavonic and East European Studies, Vol 20, Nos 1-2  2006
The Banished Heart: Origins of Heteropraxis in the Catholic Church. London: T&T Clark,  2010