APA

Middleman R. R., Wood G. G., . (1990). Skills for direct practice in social work. New York: Columbia University Press.

Chicago

Middleman Ruth R, Wood Gale Goldberg, . 1990. Skills for direct practice in social work. New York: Columbia University Press.

Harvard

Middleman R. R., Wood G. G., . (1990). Skills for direct practice in social work. New York: Columbia University Press.

MLA

Middleman Ruth R, Wood Gale Goldberg, . Skills for direct practice in social work. New York: Columbia University Press. 1990.