APA

Smalley R. E., . (1967). Theory for social work practice. New York: Columbia University Press.

Chicago

Smalley Ruth Elizabeth, . 1967. Theory for social work practice. New York: Columbia University Press.

Harvard

Smalley R. E., . (1967). Theory for social work practice. New York: Columbia University Press.

MLA

Smalley Ruth Elizabeth, . Theory for social work practice. New York: Columbia University Press. 1967.