van de Schoot, R., Yerkes, M. A., Mouw, J. M., & Sonneveld, H. (2013). What Took Them So Long? Explaining PhD Delays among Doctoral Candidates. Public Library of Science.
Chicago Zitierstilvan de Schoot, Rens, Mara A. Yerkes, Jolien M. Mouw, und Hans Sonneveld. What Took Them So Long? Explaining PhD Delays Among Doctoral Candidates. Public Library of Science, 2013.
MLA Zitierstilvan de Schoot, Rens, Mara A. Yerkes, Jolien M. Mouw, und Hans Sonneveld. What Took Them So Long? Explaining PhD Delays Among Doctoral Candidates. Public Library of Science, 2013.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.