APA

Johnson K., Le Crom J. F., .Clench's Cynophrys "Amyntor group" in Colombia with descriptions of several outlying endemics from elsewhere in South America. : .

Chicago

Johnson Kurt, Le Crom Jean Francois, .Clench's Cynophrys "Amyntor group" in Colombia with descriptions of several outlying endemics from elsewhere in South America. : .

Harvard

Johnson K., Le Crom J. F., .Clench's Cynophrys "Amyntor group" in Colombia with descriptions of several outlying endemics from elsewhere in South America. : .

MLA

Johnson Kurt, Le Crom Jean Francois, .: . .