Cita APA (7a ed.)

Wekerle, G. R., & Whitzman, C. (1995). Safe cities: Guidelines for planning, design, and management. Van Nostrand Reinhold.

Cita Chicago Style (17a ed.)

Wekerle, Gerda R., y Carolyn Whitzman. Safe Cities: Guidelines for Planning, Design, and Management. New York, NY [u.a.]: Van Nostrand Reinhold, 1995.

Cita MLA (8a ed.)

Wekerle, Gerda R., y Carolyn Whitzman. Safe Cities: Guidelines for Planning, Design, and Management. Van Nostrand Reinhold, 1995.