APA (7 ম সংস্করণ) উদ্ধৃতি

Galle, J., & Warren, P. (1989). Ecology discovery activities kit: A complete teaching unit for grades 4-8. Center for Applied Research in Education.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Galle, Janet, এবং Patricia Warren. Ecology Discovery Activities Kit: A Complete Teaching Unit for Grades 4-8. West Nyack, N.Y: Center for Applied Research in Education, 1989.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Galle, Janet, এবং Patricia Warren. Ecology Discovery Activities Kit: A Complete Teaching Unit for Grades 4-8. Center for Applied Research in Education, 1989.