APA (7th ed.) Citation

Vervoort, G., & Mason, D. J. (1980). Intermediate calculator math. Fearon Teacher Aids.

Chicago Style (17th ed.) Citation

Vervoort, Gerardus, and Dale J. Mason. Intermediate Calculator Math. Carthage, Ill: Fearon Teacher Aids, 1980.

MLA (9th ed.) Citation

Vervoort, Gerardus, and Dale J. Mason. Intermediate Calculator Math. Fearon Teacher Aids, 1980.