Cita APA (7a ed.)

Covington, G. A. (1997). Access By Design George A. Covington, Bruce Hannah. Van Nostrand Reinhold.

Cita Chicago Style (17a ed.)

Covington, George A. Access By Design George A. Covington, Bruce Hannah. Van Nostrand Reinhold, 1997.

Cita MLA (8a ed.)

Covington, George A. Access By Design George A. Covington, Bruce Hannah. Van Nostrand Reinhold, 1997.