APA引文

Guy, R. K. (1981). Unsolved problems in number theory. Springer-Verlag.

Chicago Edition Citation

Guy, Richard K. Unsolved Problems in Number Theory. New York: Springer-Verlag, 1981.

MLA引文

Guy, Richard K. Unsolved Problems in Number Theory. Springer-Verlag, 1981.

警告：這些引文格式不一定是100％准確.