Cita APA

Sullivan, F. (1946). A rock in every snowball. New york: Litte, Brown & co.

Citación estilo Chicago

Sullivan, Frank. A Rock in Every Snowball. New york: Litte, Brown & co, 1946.

Cita MLA

Sullivan, Frank. A Rock in Every Snowball. New york: Litte, Brown & co, 1946.