APA استشهاد

Pettersson,Hans. (1969). Ocean Floor (Facsimile of the 1954 Ed.). Hafner pub. Com.

استشهاد بنمط شيكاغو

Pettersson,Hans. Ocean Floor. Facsimile of the 1954 Ed. New York: Hafner pub. Com, 1969.

MLA استشهاد

Pettersson,Hans. Ocean Floor. Facsimile of the 1954 Ed. Hafner pub. Com, 1969.