Downing, D. (2010). Barron's E-Z trigonometry ([4th ed.].). Barron's Educational Series.
Style de citation Chicago (17e éd.)Downing, Douglas. Barron's E-Z Trigonometry. [4th ed.]. Hauppauge, N.Y.: Barron's Educational Series, 2010.
Style de citation MLA (8e éd.)Downing, Douglas. Barron's E-Z Trigonometry. [4th ed.]. Barron's Educational Series, 2010.
Attention : ces citations peuvent ne pas être correctes à 100%.