Cita APA (7th ed.)

Denton, P. (1996). world wide fund for nature. Orient Longman.

Cita Chicago (17th ed.)

Denton, Peter. World Wide Fund for Nature. Hyderabad: Orient Longman, 1996.

Cita MLA (9th ed.)

Denton, Peter. World Wide Fund for Nature. Orient Longman, 1996.