Jelaskan Rujukan dari Gabungan Kesatuan Perdagangan Antarabangsa dalam bahasa melayu

Fabio Bertini (2011), Gilliatt e la piovra. Il sindacalismo internazionale dalle origini ad oggi (1776-2006), Roma, Aracne

Ed Mustill (2013), The Global Labour Movement: An Introduction, a short guide to the global union federations, the ITUC, and other international bodies