APA
Sankaran M. &. S. K., . (1980). Textbook of biology. Tata McGraw Hill, New Delhi: .
Chicago
Sankaran MS & Sharma KR, . 1980. Textbook of biology. Tata McGraw Hill, New Delhi: .
Harvard
Sankaran M. &. S. K., . (1980). Textbook of biology. Tata McGraw Hill, New Delhi: .
MLA
Sankaran MS & Sharma KR, . Textbook of biology. Tata McGraw Hill, New Delhi: . 1980.