Moyer, R. E., & Ayres, F. (2009). Schaum's outline trigonometry: With calculator-based solutions (4th ed.). McGraw-Hill.
Cita Chicago (17th ed.)Moyer, Robert E., i Frank Ayres. Schaum's Outline Trigonometry: With Calculator-based Solutions. 4th ed. New York: McGraw-Hill, 2009.
Cita MLA (9th ed.)Moyer, Robert E., i Frank Ayres. Schaum's Outline Trigonometry: With Calculator-based Solutions. 4th ed. McGraw-Hill, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.