APA aipamena

Jones, P. L. (1980). Proportional reasoning of engineering students in Papua New Guinea.

Chicago Style aipamena

Jones, Peter L. Proportional Reasoning of Engineering Students in Papua New Guinea. 1980.

MLA aipamena

Jones, Peter L. Proportional Reasoning of Engineering Students in Papua New Guinea. 1980.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.