APA aipamena

Smith, P. S. (1992). Project earth science: Astronomy. NSTA.

Chicago Style aipamena

Smith, P. Sean. Project Earth Science: Astronomy. Washington, DC: NSTA, 1992.

MLA aipamena

Smith, P. Sean. Project Earth Science: Astronomy. NSTA, 1992.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.