APA (7th ed.) Citation

Lankford, F. G., & Ulrich , J. F. (1975). Essential mathematics (3rd ed.). Harcourt brace jovanovich.

Chicago Style (17th ed.) Citation

Lankford, Francis G., and James F. Ulrich. Essential Mathematics. 3rd ed. London: Harcourt brace jovanovich, 1975.

MLA (9th ed.) Citation

Lankford, Francis G., and James F. Ulrich. Essential Mathematics. 3rd ed. Harcourt brace jovanovich, 1975.