Jelaskan Rujukan dari Taman Negara Mulu dalam bahasa melayu

Hans P. Hazebroek and Abang Kashim bin Abang Morshidi National Parks of Sarawak, 2000, Perpustakaan Negara Malaysia,

David W Gill. "The Gunung Mulu National Park Nomination for World Natural Heritage Listing. Sarawak, Malaysia". 1999. Sarawak Forest Department.