Gaya APA

Keedy, M, L., Bittinger, M, L. (1986). A Problem-Solving Approach to Intermediate Algebra (2nd ed). Canada: Addison-Wesley Publishing Company.

Gaya MLA

Keedy, Mervin, L.., Bittinger, MArvin, L.. "A Problem-Solving Approach to Intermediate Algebra". 2nd ed Canada: Addison-Wesley Publishing Company, 1986. Text.