APA-viite

Gupta,o p. (1979). Aquatic Weeds: Their Menace and Control a textbook and manual. Today & Tomorrow's.

Chicago-tyylinen lähdeviittaus

Gupta,o p. Aquatic Weeds: Their Menace and Control a Textbook and Manual. New Delhi: Today & Tomorrow's, 1979.

MLA-viite

Gupta,o p. Aquatic Weeds: Their Menace and Control a Textbook and Manual. Today & Tomorrow's, 1979.