APA (7th ed.) Citation

Biswas, C., & Johri, B. M. (1997). The gymnosperms. Springer-Verlag.

Chicago Style (17th ed.) Citation

Biswas, Chhaya, and B. M. Johri. The Gymnosperms. Berlin ; New York : New Delhi : b Narosa Pub. House: Springer-Verlag, 1997.

MLA (9th ed.) Citation

Biswas, Chhaya, and B. M. Johri. The Gymnosperms. Springer-Verlag, 1997.