Cita APA (7a ed.)

Hopper, L. J. (2011). Graphic standards field guide to softscape. Wiley.

Cita Chicago Style (17a ed.)

Hopper, Leonard J. Graphic Standards Field Guide to Softscape. Hoboken, N.J: Wiley, 2011.

Cita MLA (9a ed.)

Hopper, Leonard J. Graphic Standards Field Guide to Softscape. Wiley, 2011.