APA引文

Valentine, N. (1994). Compact guide to writing letters. Ringwood, Vic.: Penguin Books.

Trích dẫn kiểu Chicago

Valentine, Nina. Compact Guide to Writing Letters. Ringwood, Vic.: Penguin Books, 1994.

MLA引文

Valentine, Nina. Compact Guide to Writing Letters. Ringwood, Vic.: Penguin Books, 1994.

警告：这些引文格式不一定是100％准确.