Gaya APA
O., C., L., Joseph, E. (1994).
Precalculus / Lawrence O. Common, Joseph Elich .
New York:
Harper Collins College Pub..
Gaya MLA
Common, Lawrence, O.., Elich, Joseph.
"Precalculus / Lawrence O. Common, Joseph Elich".
New York:
Harper Collins College Pub.,
1994.
Textbook.