APA

Stroup H. H., . (1948). Social work: an introduction to the field. New York: American Book Co.

Chicago

Stroup Herbert Hewitt, . 1948. Social work: an introduction to the field. New York: American Book Co.

Harvard

Stroup H. H., . (1948). Social work: an introduction to the field. New York: American Book Co.

MLA

Stroup Herbert Hewitt, . Social work: an introduction to the field. New York: American Book Co. 1948.