Gaya APA

KEEDY, M, L., BITTINGER, M, L. (1986). A problem-solving approach to Intermediate algebra (ed 2). United States of America: Addison-Wesley Publishing Company.

Gaya MLA

KEEDY, Mervin, L.., BITTINGER, Marvin, L.. "A problem-solving approach to Intermediate algebra". ed 2 United States of America: Addison-Wesley Publishing Company, 1986. Buku.