APA ציטוט

Helm, T. (1961). Shark!: Unpredictable killer of the sea. New York, N.Y.: Collier Books.

Trích dẫn kiểu Chicago

Helm, Thomas. Shark!: Unpredictable Killer of the Sea. New York, N.Y.: Collier Books, 1961.

ציטוט MLA

Helm, Thomas. Shark!: Unpredictable Killer of the Sea. New York, N.Y.: Collier Books, 1961.