APA (7th ed.) Citation
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.
Chicago Style (17th ed.) Citation
Tuckman, Howard P., Susan Coyle, and 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.
MLA (9th ed.) Citation
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.
Warning: These citations may not always be 100% accurate.