Cita APA (7a ed.)

Kobal Collection & Hardy, P. (1991). The Western (2nd. rev., updated ed.). Aurum.

Cita Chicago Style (17a ed.)

Kobal Collection y Phil Hardy. The Western. 2nd. rev., updated ed. London: Aurum, 1991.

Cita MLA (9a ed.)

Kobal Collection y Phil Hardy. The Western. 2nd. rev., updated ed. Aurum, 1991.