APA
Wightman F Ed, International conference on biochemistry and physiology of plant growth substances (6th : 1967 : Ottawa) & Setterfield G Ed. (1968). Proceeding on biochemistry and physiology of plant growth substances. Ottawa: Runge Press.
Chicago
Wightman F Ed, International conference on biochemistry and physiology of plant growth substances (6th : 1967 : Ottawa) and Setterfield G Ed. 1968. Proceeding on biochemistry and physiology of plant growth substances. Ottawa: Runge Press.
Harvard
Wightman F Ed, International conference on biochemistry and physiology of plant growth substances (6th : 1967 : Ottawa) and Setterfield G Ed. (1968). Proceeding on biochemistry and physiology of plant growth substances. Ottawa: Runge Press.
MLA
Wightman F Ed, International conference on biochemistry and physiology of plant growth substances (6th : 1967 : Ottawa) and Setterfield G Ed. Proceeding on biochemistry and physiology of plant growth substances. Ottawa: Runge Press. 1968.
