APA (7th ed.) Citation

Schmiedel, O. (1920). Theorem of Nicomachus. School Science & Mathematics, 20, 462. https://doi.org/10.1111/j.1949-8594.1920.tb12606.x

Chicago Style (17th ed.) Citation

Schmiedel, Oscar. "Theorem of Nicomachus." School Science & Mathematics 20 (1920): 462. https://doi.org/10.1111/j.1949-8594.1920.tb12606.x.

MLA (9th ed.) Citation

Schmiedel, Oscar. "Theorem of Nicomachus." School Science & Mathematics, vol. 20, 1920, p. 462, https://doi.org/10.1111/j.1949-8594.1920.tb12606.x.