APA

Landheer B., . (1957). Social functions of libraries. New York: Scarecrow Press.

Chicago

Landheer Bartholomeus, . 1957. Social functions of libraries. New York: Scarecrow Press.

Harvard

Landheer B., . (1957). Social functions of libraries. New York: Scarecrow Press.

MLA

Landheer Bartholomeus, . Social functions of libraries. New York: Scarecrow Press. 1957.