APA (7 ম সংস্করণ) উদ্ধৃতি

Urquhart, P. (1999). IPM and the citrus industry in South Africa. International Institute for Environment and Development.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Urquhart, Penny. IPM and the Citrus Industry in South Africa. London: International Institute for Environment and Development, 1999.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Urquhart, Penny. IPM and the Citrus Industry in South Africa. International Institute for Environment and Development, 1999.