Raintree, J. B. (2002). Marketing research for conservaation and development. Hà Nội: [Hà Nội].
Chicago ZitierstilRaintree, John B. Marketing Research for Conservaation and Development. Hà Nội: [Hà Nội], 2002.
MLA ZitierstilRaintree, John B. Marketing Research for Conservaation and Development. Hà Nội: [Hà Nội], 2002.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.