Cita APA (7a ed.)

McCulloch, M. J. (1985). Pets in therapeutic programs for the aged. [s.n.].

Cita Chicago Style (17a ed.)

McCulloch, Michael J. Pets in Therapeutic Programs for the Aged. [S.l.]: [s.n.], 1985.

Cita MLA (9a ed.)

McCulloch, Michael J. Pets in Therapeutic Programs for the Aged. [s.n.], 1985.