Cita APA (7a ed.)

Lockley, L. C. (1952). Making letters build business. s.n.

Cita Chicago Style (17a ed.)

Lockley, Lawrence Campbell. Making Letters Build Business. Los Angeles: s.n, 1952.

Cita MLA (9a ed.)

Lockley, Lawrence Campbell. Making Letters Build Business. s.n, 1952.