Gaya APA

Nustad, H, L. (1987). Principles of elementary algebra with application / Harry L. Nustad and Terry H. Wesner . : WM.C. Brown.

Gaya MLA

Nustad, Harry, L.. "Principles of elementary algebra with application / Harry L. Nustad and Terry H. Wesner". : WM.C. Brown, 1987. Referensi.