Gaya APA

WILLERDING, M, F., HAYWARD, R, A. (1972). MATHEMATICS : THE ALPHABET OF SCIENCE (2nd). New York: JOHN WILEY & SONS.

Gaya MLA

WILLERDING, Margaret, F.., HAYWARD, RUTH, A.. "MATHEMATICS : THE ALPHABET OF SCIENCE". 2nd New York: JOHN WILEY & SONS, 1972. Textbook.