Cita APA (7a ed.)

Powell, W. F. A., & Powell, W. F. (2003). Drawing: Trees with William F. Powell (1st edition.). Walter Foster Publishing Incorporated.

Cita Chicago Style (17a ed.)

Powell, William F Author, y William F. Powell. Drawing: Trees with William F. Powell. 1st edition. [Place of publication not identified]: Walter Foster Publishing Incorporated, 2003.

Cita MLA (9a ed.)

Powell, William F Author, y William F. Powell. Drawing: Trees with William F. Powell. 1st edition. Walter Foster Publishing Incorporated, 2003.