Cita APA (7th ed.)

Sagwal, S. S. (1997). Handbook of ecological terms. Kalyani Publishers.

Cita Chicago (17th ed.)

Sagwal, S. S. Handbook of Ecological Terms. Ludhiana: Kalyani Publishers, 1997.

Cita MLA (9th ed.)

Sagwal, S. S. Handbook of Ecological Terms. Kalyani Publishers, 1997.