APA aipamena

McGettrick, A. D., & Smith, P. D. (1983). Graded problems in computer science.

Chicago Style aipamena

McGettrick, Andrew D., and P. D. Smith. Graded Problems in Computer Science. 1983.

MLA aipamena

McGettrick, Andrew D., and P. D. Smith. Graded Problems in Computer Science. 1983.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.