Gaya APA

Keedy, M, L., Bittinger, M, L. (1986). A problem solving approach to intermediate algebra (Ed. 2). Reading, Mass.: Addison-Wesley.

Gaya MLA

Keedy, Mervin, L., Bittinger, Marvin, L.. "A problem solving approach to intermediate algebra". Ed. 2 Reading, Mass.: Addison-Wesley, 1986. Text.