APA (7 ম সংস্করণ) উদ্ধৃতি

Durst, P. B., & Ingraam, D. (1987). How well do developing countries promote nature-oriented tourism by mail. Southeastern Center for Forest Economics Research.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Durst, Patrick B., এবং Denise Ingraam. How Well Do Developing Countries Promote Nature-oriented Tourism by Mail. Research Triangle Park, N.C: Southeastern Center for Forest Economics Research, 1987.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Durst, Patrick B., এবং Denise Ingraam. How Well Do Developing Countries Promote Nature-oriented Tourism by Mail. Southeastern Center for Forest Economics Research, 1987.