APA aipamena

Rickard John A. & Ray, R. E. (1965). Discovering American histroy.Rev by James A Rickard.

Chicago Style aipamena

Rickard John A. and Rolor E. Ray. Discovering American Histroy.Rev by James A Rickard. 1965.

MLA aipamena

Rickard John A. and Rolor E. Ray. Discovering American Histroy.Rev by James A Rickard. 1965.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.