APA
Blitzer R., . (2010). Precalculus. Upper Saddle River, NJ: Prentice Hall.
Chicago
Blitzer Robert, . 2010. Precalculus. Upper Saddle River, NJ: Prentice Hall.
Harvard
Blitzer R., . (2010). Precalculus. Upper Saddle River, NJ: Prentice Hall.
MLA
Blitzer Robert, . Precalculus. Upper Saddle River, NJ: Prentice Hall. 2010.