APA (7th ed.) Citation

Ridout, R. (1979). Puzzle it out (2nd ed.). Evans Brothers.

Chicago Style (17th ed.) Citation

Ridout, Ronald. Puzzle It Out. 2nd ed. London: Evans Brothers, 1979.

MLA (8th ed.) Citation

Ridout, Ronald. Puzzle It Out. 2nd ed. Evans Brothers, 1979.

Warning: These citations may not always be 100% accurate.