Citazione Stile APA (7a Edizione)

POLIS, A. R., & BEARD, E. M. (1973). Fundamental mathematics for elementary teachers: A behavioral objectives approach. Harper and Row.

Citazione stile Chigago Style (17a edizione)

POLIS, A. Richard, e Earl M. BEARD. Fundamental Mathematics for Elementary Teachers: A Behavioral Objectives Approach. New York: Harper and Row, 1973.

Citatione MLA (9a ed.)

POLIS, A. Richard, e Earl M. BEARD. Fundamental Mathematics for Elementary Teachers: A Behavioral Objectives Approach. Harper and Row, 1973.