APA引文

Atkins, W. C. (1960). History of spain and portugal. Penguin books.

Chicago Edition Citation

Atkins, William C. History of Spain and Portugal. Harmondsworth: Penguin books, 1960.

MLA引文

Atkins, William C. History of Spain and Portugal. Penguin books, 1960.

警告：这些引文格式不一定是100％准确.