Tohutoro APA (7th ed.)
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.
Tohutoru Kātū Chicago (17th ed.)
Tuckman, Howard P., Susan Coyle, me 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.
Tohutoro MLA (9th ed.)
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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