Gaya APA

Nagel, U, J. et al (1989). Focussing Formal Surveys The Use of Rapid Rural Appraisal for Designing a Survey in Nam Lang (Thailand) . Berlin: Technical University of Berlin.

Gaya MLA

Nagel, Uwe, Jens. et al. "Focussing Formal Surveys The Use of Rapid Rural Appraisal for Designing a Survey in Nam Lang (Thailand)". Berlin: Technical University of Berlin, 1989. Text.