Kuper, G. H. & Sterken, E. (2006, 08. November). Endurance in speed skating. Zugriff unter https://www.rug.nl/research/portal/files/3090971/200111.pdf
APA (7th ed.) CitationKuper, G. H., & Sterken, E. Endurance in speed skating.
Chicago Style (17th ed.) CitationKuper, G. H., and E. Sterken. Endurance in Speed Skating.
MLA (9th ed.) CitationKuper, G. H., and E. Sterken. Endurance in Speed Skating.
Warning: These citations may not always be 100% accurate.