APA

De Kruif P., . (1926). Microbe hunters. New York: Blue Ribbon Books.

Chicago

De Kruif Paul, . 1926. Microbe hunters. New York: Blue Ribbon Books.

Harvard

De Kruif P., . (1926). Microbe hunters. New York: Blue Ribbon Books.

MLA

De Kruif Paul, . Microbe hunters. New York: Blue Ribbon Books. 1926.