Citazione Stile APA (7a Edizione)

Heineman, E. R., & Tarwater, J. D. (1993). Plane Trigonometry (seventh edition.). McGraw-Hill, Inc.

Citazione stile Chigago Style (17a edizione)

Heineman, E. Richard, e J. Dalton Tarwater. Plane Trigonometry. seventh edition. New York, EEUU: McGraw-Hill, Inc, 1993.

Citatione MLA (9a ed.)

Heineman, E. Richard, e J. Dalton Tarwater. Plane Trigonometry. seventh edition. McGraw-Hill, Inc, 1993.