Varberg, D., & Purcell, E. J. (2001). Kalkulus. Interaksara.
Chicago Style (17th ed.) CitationVarberg, Dale, and Edwin J. Purcell. Kalkulus. Interaksara, 2001.
MLA (8th ed.) CitationVarberg, Dale, and Edwin J. Purcell. Kalkulus. Interaksara, 2001.
Warning: These citations may not always be 100% accurate.