APA

Germain C. B., . (1979). Social work practice: people and environments, an ecological perspective. New York: Columbia University Press.

Chicago

Germain Carel B, . 1979. Social work practice: people and environments, an ecological perspective. New York: Columbia University Press.

Harvard

Germain C. B., . (1979). Social work practice: people and environments, an ecological perspective. New York: Columbia University Press.

MLA

Germain Carel B, . Social work practice: people and environments, an ecological perspective. New York: Columbia University Press. 1979.