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