APA (7th ed.) Citation

Welchons, A. (1959). Teacher's key: Solid Geometry. Ginn.

Chicago Style (17th ed.) Citation

Welchons, A.M. Teacher's Key: Solid Geometry. Boston ; New York: Ginn, 1959.

MLA (9th ed.) Citation

Welchons, A.M. Teacher's Key: Solid Geometry. Ginn, 1959.