APA stil citiranja
Guy, R. K. (1981). Unsloved problems in number theory: Unsloved problems in number theory. New York [etc.]: Springer-Verlag.
Chicago stil citiranjaGuy, Richard K. Unsloved problems in number theory: Unsloved problems in number theory. New York [etc.]: Springer-Verlag, 1981.
MLA stil citiranjaGuy, Richard K. Unsloved problems in number theory: Unsloved problems in number theory. New York [etc.]: Springer-Verlag, 1981.
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