APA (7th ed.) Citation

Krug, C. A., & Poerck, R. A. d. (1968). World coffee survey. FAO.

Chicago Style (17th ed.) Citation

Krug, C. A., and R. A. de Poerck. World Coffee Survey. Rome: FAO, 1968.

MLA (9th ed.) Citation

Krug, C. A., and R. A. de Poerck. World Coffee Survey. FAO, 1968.

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