Germain, Carel B. The life model of social work practice / Carel B. Germain, Alex Gitterman. - New York : Columbia University Press, 1980. - xiii, 376 p. ; 24 cm. ISBN: 0231041527 LCCN: 79017816 LC Class. No.: HV43 .G47 / .G47 Dewey Class. No.: 361