Cita APA (7a ed.)

(1997). The flock: 1997 membership directory. Onthological Societes of North America.

Cita Chicago Style (17a ed.)

The Flock: 1997 Membership Directory. Estados Unidos: Onthological Societes of North America, 1997.

Cita MLA (9a ed.)

The Flock: 1997 Membership Directory. Onthological Societes of North America, 1997.