APA
Meeting of the International Geographical Union Working Group on Market-Place Exchange Systems, Smith R. H. T., Gormsen E. & Johannes Gutenberg-Universität Mainz. (1979). Market - place exchange: spatial analysis and police : papers presented at the Meeting of the International Geographical Union Working Group on Market - Place Exchange Systems, Zaria, Nigeria, July 1978. Mainz: Geographisches Institut der Johannes-Gutenberg-Universität Mainz.
Chicago
Meeting of the International Geographical Union Working Group on Market-Place Exchange Systems, Smith Robert Henry Tufrey, Gormsen Erdmann and Johannes Gutenberg-Universität Mainz. 1979. Market - place exchange: spatial analysis and police : papers presented at the Meeting of the International Geographical Union Working Group on Market - Place Exchange Systems, Zaria, Nigeria, July 1978. Mainz: Geographisches Institut der Johannes-Gutenberg-Universität Mainz.
Harvard
Meeting of the International Geographical Union Working Group on Market-Place Exchange Systems, Smith R. H. T., Gormsen E. and Johannes Gutenberg-Universität Mainz. (1979). Market - place exchange: spatial analysis and police : papers presented at the Meeting of the International Geographical Union Working Group on Market - Place Exchange Systems, Zaria, Nigeria, July 1978. Mainz: Geographisches Institut der Johannes-Gutenberg-Universität Mainz.
MLA
Meeting of the International Geographical Union Working Group on Market-Place Exchange Systems, Smith Robert Henry Tufrey, Gormsen Erdmann and Johannes Gutenberg-Universität Mainz. Market - place exchange: spatial analysis and police : papers presented at the Meeting of the International Geographical Union Working Group on Market - Place Exchange Systems, Zaria, Nigeria, July 1978. Mainz: Geographisches Institut der Johannes-Gutenberg-Universität Mainz. 1979.