Cita APA

Anil Tyagi. (2009). Trueman's UGC NET/SLET Environmental Science. Danika publishing house.

Citación estilo Chicago

Anil Tyagi. Trueman's UGC NET/SLET Environmental Science. New Delhi: Danika publishing house, 2009.

Cita MLA

Anil Tyagi. Trueman's UGC NET/SLET Environmental Science. Danika publishing house, 2009.