APA

Mackenzie K. K., . (1940). North American Cariceae 2. New York: .

Chicago

Mackenzie K K, . 1940. North American Cariceae 2. New York: .

Harvard

Mackenzie K. K., . (1940). North American Cariceae 2. New York: .

MLA

Mackenzie K K, . North American Cariceae 2. New York: . 1940.