Cita APA (7th ed.)
Crosswhite. (1976). Pre-calculus mathematics. Charles E Merril.
Cita Chicago (17th ed.)
Crosswhite. Pre-calculus Mathematics. New York: Charles E Merril, 1976.
Cita MLA (9th ed.)
Crosswhite. Pre-calculus Mathematics. Charles E Merril, 1976.
Atenció: Aquestes cites poden no estar 100% correctes.