APA način citiranja

Warnakulasooriya, R., Pallazzo, D. J., & Pritchard, D. E. Time to completion of web-based physics problems with tutoring.

Čikaški stil citiranja

Warnakulasooriya, Rasil., David J. Pallazzo, i David E. Pritchard. Time to Completion of Web-based Physics Problems With Tutoring.

MLA način citiranja

Warnakulasooriya, Rasil., David J. Pallazzo, i David E. Pritchard. Time to Completion of Web-based Physics Problems With Tutoring.