Cita APA (7a ed.)

Brickel, C. M. (1987). The pet-facilitated therapies. [s.n.].

Cita Chicago Style (17a ed.)

Brickel, Clark M. The Pet-facilitated Therapies. [S.l.]: [s.n.], 1987.

Cita MLA (9a ed.)

Brickel, Clark M. The Pet-facilitated Therapies. [s.n.], 1987.