Cita APA (7a ed.)

Guilfoyle, M. J. (1937). Custom: : an historical synopsis and commentary . The Catholic university of America.

Cita Chicago Style (17a ed.)

Guilfoyle, Merlin Joseph. Custom: : An Historical Synopsis and Commentary . Washington, D.C.,: The Catholic university of America, 1937.

Cita MLA (9a ed.)

Guilfoyle, Merlin Joseph. Custom: : An Historical Synopsis and Commentary . The Catholic university of America, 1937.