Cita APA (7th ed.)

Chopra , R., & Kumra , P. (1988). Biology of bryophytes. Wiley Eastern Limited.

Cita Chicago (17th ed.)

Chopra , R.N, i P.K Kumra. Biology of Bryophytes. New Delhi: Wiley Eastern Limited, 1988.

Cita MLA (9th ed.)

Chopra , R.N, i P.K Kumra. Biology of Bryophytes. Wiley Eastern Limited, 1988.