Citazione APA

Gupta, P. K. (2003). Vermicomposting for sustainable agriculture (2nd rev. ed.). Agrobios.

Stile di citazione Chicago

Gupta, P. K. Vermicomposting for Sustainable Agriculture. 2nd rev. ed. jodhpur: Agrobios, 2003.

Citazione MLA

Gupta, P. K. Vermicomposting for Sustainable Agriculture. 2nd rev. ed. Agrobios, 2003.