Cita APA (7a ed.)

Japp, K. P. (1991). Preventive planning - a strategy with loss of purpose. Social prevention and the social sciences, 81-94.

Cita Chicago Style (17a ed.)

Japp, Klaus Peter. "Preventive Planning - a Strategy with Loss of Purpose." Social Prevention and the Social Sciences 1991: 81-94.

Cita MLA (9a ed.)

Japp, Klaus Peter. "Preventive Planning - a Strategy with Loss of Purpose." Social Prevention and the Social Sciences, 1991, pp. 81-94.