APA

Sprott W J H, . (1958). Human Groups. [Harmondsworth, Middlesex]: Penguin Books.

Chicago

Sprott W J H, . 1958. Human Groups. [Harmondsworth, Middlesex]: Penguin Books.

Harvard

Sprott W J H, . (1958). Human Groups. [Harmondsworth, Middlesex]: Penguin Books.

MLA

Sprott W J H, . Human Groups. [Harmondsworth, Middlesex]: Penguin Books. 1958.