Cita APA (7th ed.)

Westlake, D. E. (1980). Castle in the air. M. Evans.

Cita Chicago (17th ed.)

Westlake, Donald E. Castle in the Air. New York: M. Evans, 1980.

Cita MLA (8th ed.)

Westlake, Donald E. Castle in the Air. M. Evans, 1980.