Citazione Stile APA (7a Edizione)

TYAGI,A.P. (1976). An Introduction to Palaeontology (2nd ed.). Chand and Company.

Citazione stile Chigago Style (17a edizione)

TYAGI,A.P. An Introduction to Palaeontology. 2nd ed. New Delhi: Chand and Company, 1976.

Citatione MLA (9a ed.)

TYAGI,A.P. An Introduction to Palaeontology. 2nd ed. Chand and Company, 1976.