APA (7th ed.) Citation

Jaques, H. E. (1949). Plant families: How to know them (2nd ed.). WCB/McGraw-Hill.

Chicago Style (17th ed.) Citation

Jaques, H. E. Plant Families: How to Know Them. 2nd ed. Boston: WCB/McGraw-Hill, 1949.

MLA (8th ed.) Citation

Jaques, H. E. Plant Families: How to Know Them. 2nd ed. WCB/McGraw-Hill, 1949.