Cita APA (7a ed.)

Salter, J. (1992). The director?s guide to environmental issues. Director Books.

Cita Chicago Style (17a ed.)

Salter, John. The Director?s Guide to Environmental Issues. Hemel Hempstead (Gran Bretaña): Director Books, 1992.

Cita MLA (9a ed.)

Salter, John. The Director?s Guide to Environmental Issues. Director Books, 1992.