Orr, B. (1992). College algebra / Bill Orr. Harper Perennial.
Chicago Style (17th ed.) CitationOrr, Bill. College Algebra / Bill Orr. New York: Harper Perennial, 1992.
MLA (9th ed.) CitationOrr, Bill. College Algebra / Bill Orr. Harper Perennial, 1992.
Warning: These citations may not always be 100% accurate.