APA (7th ed.) Citation

Howe, R. (2002). Hermione Granger's Solution. Mathematics Teacher, 95(2), 86.

Chicago Style (17th ed.) Citation

Howe, Roger. "Hermione Granger's Solution." Mathematics Teacher 95, no. 2 (2002): 86.

MLA (9th ed.) Citation

Howe, Roger. "Hermione Granger's Solution." Mathematics Teacher, vol. 95, no. 2, 2002, p. 86.