Citazione Stile APA (7a Edizione)

Wren, F. L. ,. (1965). Basic mathematical concepts. McGraw-Hill Book Co., Inc.

Citazione stile Chigago Style (17a edizione)

Wren, Frank Lynwood ,1894-. Basic Mathematical Concepts. New York: McGraw-Hill Book Co., Inc, 1965.

Citatione MLA (9a ed.)

Wren, Frank Lynwood ,1894-. Basic Mathematical Concepts. McGraw-Hill Book Co., Inc, 1965.