Tuckman, H. P., Coyle, S. L., & 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.) CitationTuckman, Howard P., Susan L. 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 (8th ed.) CitationTuckman, 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.