APA (7th ed.) Citation

Vervoort, G., & Mason, D. J. (1980). Beginning calculator math. D.S. Lake.

Chicago Style (17th ed.) Citation

Vervoort, Gerardus, and Dale J. Mason. Beginning Calculator Math. Belmont, Calif: D.S. Lake, 1980.

MLA (9th ed.) Citation

Vervoort, Gerardus, and Dale J. Mason. Beginning Calculator Math. D.S. Lake, 1980.