Cita APA (7th ed.)

Fengel, D., & Wegener, G. (1989). Wood: Chemistry, ultrastructure, reactions. Walter de Gruyter.

Cita Chicago (17th ed.)

Fengel, Dietrich, i Gerd Wegener. Wood: Chemistry, Ultrastructure, Reactions. Berlin ; New York: Walter de Gruyter, 1989.

Cita MLA (9th ed.)

Fengel, Dietrich, i Gerd Wegener. Wood: Chemistry, Ultrastructure, Reactions. Walter de Gruyter, 1989.