APA引文

Fred Hoyle. (1960). The black cloud. Britain: Penguin Books.

Trích dẫn kiểu Chicago

Fred Hoyle. The Black Cloud. Britain: Penguin Books, 1960.

MLA引文

Fred Hoyle. The Black Cloud. Britain: Penguin Books, 1960.

警告：这些引文格式不一定是100％准确.