APA aipamena

Dennis B. Fradin. (1983). Astronomy (New True Book). Childrens Pr.

Chicago Style aipamena

Dennis B. Fradin. Astronomy (New True Book). Childrens Pr, 1983.

MLA aipamena

Dennis B. Fradin. Astronomy (New True Book). Childrens Pr, 1983.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.