(1986). Mathematics: Houghton Mifflin. Houghton Mifflin.
Cita Chicago (17th ed.)Mathematics: Houghton Mifflin. Boston: Houghton Mifflin, 1986.
Cita MLA (9th ed.)Mathematics: Houghton Mifflin. Houghton Mifflin, 1986.
Atenció: Aquestes cites poden no estar 100% correctes.