Cita APA (7a ed.)

Kraus, R. G., & Washington, N. (1985). Needs assessment in urban recreation: A university's role. [s.n.].

Cita Chicago Style (17a ed.)

Kraus, Richard G., y Nathaniel Washington. Needs Assessment in Urban Recreation: A University's Role. [S.l.]: [s.n.], 1985.

Cita MLA (9a ed.)

Kraus, Richard G., y Nathaniel Washington. Needs Assessment in Urban Recreation: A University's Role. [s.n.], 1985.