Παραπομπή APA

Ravindrakumar,G.R.,et al. (1990). Charnokite -Khondalite belt and tertiary -Quaternary sequences of southern Kerala: Excursion guide. GSI.

Παραπομπή Chicago Style

Ravindrakumar,G.R.,et al. Charnokite -Khondalite Belt and Tertiary -Quaternary Sequences of Southern Kerala: Excursion Guide. Bangalore: GSI, 1990.

Παραπομπή MLA

Ravindrakumar,G.R.,et al. Charnokite -Khondalite Belt and Tertiary -Quaternary Sequences of Southern Kerala: Excursion Guide. GSI, 1990.