Cole, J. (1967). A geography of the U.S.S.R. Harmondsworth: Penguin Books.
Trích dẫn kiểu ChicagoCole, John. A Geography of the U.S.S.R. Harmondsworth: Penguin Books, 1967.
MLA引文Cole, John. A Geography of the U.S.S.R. Harmondsworth: Penguin Books, 1967.
警告：这些引文格式不一定是100％准确.