APA-referens (7:e uppl.)

Cooray, P. G. (1961). Geology of the country around Rangala: (an explanation of one-inch geological sheet 49, preliminary series). Govt. Press.

Chicago-referens (17:e uppl.)

Cooray, P. G. Geology of the Country Around Rangala: (an Explanation of One-inch Geological Sheet 49, Preliminary Series). Colombo: Govt. Press, 1961.

MLA-referens (8:e uppl.)

Cooray, P. G. Geology of the Country Around Rangala: (an Explanation of One-inch Geological Sheet 49, Preliminary Series). Govt. Press, 1961.