Παραπομπή APA

Geison,Gerald, & Holmes,Frederic L. (1993). Research schools: : historical reappraisals. Philadelphia, PA.: University of Pennsylvania.

Παραπομπή Chicago Style

Geison,Gerald, and Holmes,Frederic L. Research Schools: : Historical Reappraisals. Philadelphia, PA.: University of Pennsylvania, 1993.

Παραπομπή MLA

Geison,Gerald, and Holmes,Frederic L. Research Schools: : Historical Reappraisals. Philadelphia, PA.: University of Pennsylvania, 1993.

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