APA
Sankaran M. &. S. K., . (1980). Textbook of biology, XII. Delhi: Tata McGraw-Hill.
Chicago
Sankaran M.S & Sarma K.R, . 1980. Textbook of biology, XII. Delhi: Tata McGraw-Hill.
Harvard
Sankaran M. &. S. K., . (1980). Textbook of biology, XII. Delhi: Tata McGraw-Hill.
MLA
Sankaran M.S & Sarma K.R, . Textbook of biology, XII. Delhi: Tata McGraw-Hill. 1980.