APA (7th ed.) Citation

Holt, D. F., & Plesken, W. (1989). Perfect groups. Clarendon Pr.

Chicago Style (17th ed.) Citation

Holt, Derek F., and Wilhelm Plesken. Perfect Groups. Oxford: Clarendon Pr, 1989.

MLA (9th ed.) Citation

Holt, Derek F., and Wilhelm Plesken. Perfect Groups. Clarendon Pr, 1989.

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