Cita APA (7th ed.)

Datta, S. C. (1992). An introduction to gymnosperms (4th ed.). Kalyani Publishers.

Cita Chicago (17th ed.)

Datta, Subhash Chandra. An Introduction to Gymnosperms. 4th ed. New Delhi: Kalyani Publishers, 1992.

Cita MLA (9th ed.)

Datta, Subhash Chandra. An Introduction to Gymnosperms. 4th ed. Kalyani Publishers, 1992.