Style de citation APA (7e éd.)

Lockley, L. C. (1927). Principles of effective letter-writing. McGraw-Hill.

Style de citation Chicago (17e éd.)

Lockley, Lawrence Campbell. Principles of Effective Letter-writing. New York: McGraw-Hill, 1927.

Style de citation MLA (9e éd.)

Lockley, Lawrence Campbell. Principles of Effective Letter-writing. McGraw-Hill, 1927.