Gaya APA

Steffensen, A, R., Johnson, L, M, (, M. (1992). Essential mathematics for college students / Arnold R. Steffensen, L. Murphy Johnson (Ed.ke-2). New York: Harper Collins Publishers.

Gaya MLA

Steffensen, Arnold, R.., Johnson, L., Murphy, (Lee, Murphy). "Essential mathematics for college students / Arnold R. Steffensen, L. Murphy Johnson". Ed.ke-2 New York: Harper Collins Publishers, 1992. Textbook.