Cita APA (7a ed.)

Callahan, J. (1982). A geometric model of anorexia and its treatment. [s.n.].

Cita Chicago Style (17a ed.)

Callahan, James. A Geometric Model of Anorexia and Its Treatment. [S.l.]: [s.n.], 1982.

Cita MLA (9a ed.)

Callahan, James. A Geometric Model of Anorexia and Its Treatment. [s.n.], 1982.