Cita APA (7a ed.)

Heppenstall, R. (1968). The connecting door. Dufour.

Cita Chicago Style (17a ed.)

Heppenstall, Rayner. The Connecting Door. [Chester Springs, Pa.]: Dufour, 1968.

Cita MLA (9a ed.)

Heppenstall, Rayner. The Connecting Door. Dufour, 1968.