Matematyka.

Unsolved problems in number theory / Richard K. Guy. - 2nd ed. - New York, 1994. (Dept. of Mathematics and Statistics, Univ. of Calgary, Canada)

LCC online

Combinatorial structures and their applications / ed. comm. Richard Guy [et al.]. - New York [etc.], cop. 1970.

The book of numbers / John H. Conway, Richard K. Guy. - New York, 1998.

HeBIS online

pl.wikipedia, 14.03.2020 https://pl.wikipedia.org/wiki/Richard_Kenneth_Guy

pl.wikipedia, 14.03.2020