Cita APA

P R Trivedi. (1999). Encyclopaedia of world environment,Vol.2: Environment. APH publishing corporation.

Chicago Edition Citation

P R Trivedi. Encyclopaedia of World Environment,Vol.2: Environment. New Delhi: APH publishing corporation, 1999.

Cita MLA

P R Trivedi. Encyclopaedia of World Environment,Vol.2: Environment. APH publishing corporation, 1999.

Atenció: Aquestes cites poden no estar 100% correctes.