APA-referens

Clifford M N, W. K. C. (1985). Coffee: Botany,biochemistry and production of beans and beverage. Groomhelm.

Chicago-stil citat

Clifford M N, Willson K C. Coffee: Botany,biochemistry and Production of Beans and Beverage. U S A: Groomhelm, 1985.

MLA-referens

Clifford M N, Willson K C. Coffee: Botany,biochemistry and Production of Beans and Beverage. Groomhelm, 1985.