APA (7th ed.) Citation

Buley, M., & Zettel, B. (1998). Exportar productos ecológicos: Manual de marketing. Protrade.

Chicago Style (17th ed.) Citation

Buley, Marion, and Bernd Zettel. Exportar Productos Ecológicos: Manual De Marketing. Munchen: Protrade, 1998.

MLA (9th ed.) Citation

Buley, Marion, and Bernd Zettel. Exportar Productos Ecológicos: Manual De Marketing. Protrade, 1998.

Warning: These citations may not always be 100% accurate.