APA (7th ed.) Citation

Von Ziegesar, M., & Von Ziegesar, D. (1987). Practise with puzzles!: : book 1. Oxford university.

Chicago Style (17th ed.) Citation

Von Ziegesar, Margaret, and Detlef Von Ziegesar. Practise with Puzzles!: : Book 1. Oxford: Oxford university, 1987.

MLA (9th ed.) Citation

Von Ziegesar, Margaret, and Detlef Von Ziegesar. Practise with Puzzles!: : Book 1. Oxford university, 1987.

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