APA

Jaques H. E., . (1949). Plant families: how to know them. Dubuque, Iowa, USA: W. C. Brown Company Publishers.

Chicago

Jaques H E, . 1949. Plant families: how to know them. Dubuque, Iowa, USA: W. C. Brown Company Publishers.

Harvard

Jaques H. E., . (1949). Plant families: how to know them. Dubuque, Iowa, USA: W. C. Brown Company Publishers.

MLA

Jaques H E, . Plant families: how to know them. Dubuque, Iowa, USA: W. C. Brown Company Publishers. 1949.