Gaya APA

Steffenson, A, R, 1., Johnson, L, M, (, M. (1991). Fundamentals of mathematics / Arnold R. Steffenson, L. Murphy Johnson (Ed.ke-3). New York: Harper n Collin.

Gaya MLA

Steffenson, Arnold, R.,, 1942., Johnson, L., Murphy, (Lee, Murphy). "Fundamentals of mathematics / Arnold R. Steffenson, L. Murphy Johnson". Ed.ke-3 New York: Harper n Collin, 1991. Textbook.