APA (7 ম সংস্করণ) উদ্ধৃতি
Tuckman, H. P., Coyle, S., & Bae, Y. (1990). On time to the doctorate: A study of the increased time to complete doctorates in science and engineering. National Academy Press.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি
Tuckman, Howard P., Susan Coyle, এবং Yupin Bae. On Time to the Doctorate: A Study of the Increased Time to Complete Doctorates in Science and Engineering. Washington, D.C.: National Academy Press, 1990.
M.L.A (9 ম সংস্করণ) উদ্ধৃতি
Tuckman, Howard P., et al. On Time to the Doctorate: A Study of the Increased Time to Complete Doctorates in Science and Engineering. National Academy Press, 1990.
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