Gaya APA

Keedy, M, L., Bittinger, M, L. (1986). A problem-solving approach to intetmediate algebra (2nd. ed.). Massachusetts: .

Gaya MLA

Keedy, Mervin, Laverne., Bittinger, Marvin, L. "A problem-solving approach to intetmediate algebra". 2nd. ed. Massachusetts: , 1986. Text.