APA (7th ed.) Citation

Connington, J. J. [. (1949). The case with nine solutions. Penguin.

Chicago Style (17th ed.) Citation

Connington, J. J. [pseud.]. The Case with Nine Solutions. London: Penguin, 1949.

MLA (9th ed.) Citation

Connington, J. J. [pseud.]. The Case with Nine Solutions. Penguin, 1949.

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