Tuckman, H. P. (1990). On time to the doctorate: A study of the increased time to complete doctorates in science and engineering. National Academy Press.
Chicago-Zitierstil (17. Ausg.)Tuckman, Howard P. 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-Zitierstil (9. Ausg.)Tuckman, Howard P. On Time to the Doctorate: A Study of the Increased Time to Complete Doctorates in Science and Engineering. National Academy Press, 1990.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.