Gaya APA

Keedy, M, L., Bittinger, M, L. (1986). A Problem-Solving Approach to Intermediate Algebra (Ed. 2). Massachusetts: Addison-Wesley Publishig Compay.

Gaya MLA

Keedy, Mervin, L.., Bittinger, Marvin, L.. "A Problem-Solving Approach to Intermediate Algebra". Ed. 2 Massachusetts: Addison-Wesley Publishig Compay, 1986. Text.