Cita APA (7a ed.)

Kelly, J. N. D. (1952). What is catholicism? [s.n.].

Cita Chicago Style (17a ed.)

Kelly, J. N. D. What Is Catholicism? [S.l.]: [s.n.], 1952.

Cita MLA (9a ed.)

Kelly, J. N. D. What Is Catholicism? [s.n.], 1952.