Gaya APA

Irfandani, W., Barnet, R, A, Z, M, R, D, B, K, E. (2008). Precalculus (Sixth). Boston: McGraw-Hill.

Gaya MLA

Irfandani, Wisnu., Barnet, Raymond, A.,, Ziegler,, Michael, R, Dan, Byleen,, Karl, E.. "Precalculus". Sixth Boston: McGraw-Hill, 2008. Text.