Gaya APA
L.Keedy, M., Bittinger, M, L. (1986).
A problem-solving approach to intermediate algebra .
Canada:
Addison Wesley.
Gaya MLA
L.Keedy, Mervin., Bittinger, Marvin, L..
"A problem-solving approach to intermediate algebra".
Canada:
Addison Wesley,
1986.
Text.