APA

Sage Publications, . (1979). Sage research progress series in evaluation. Beverly Hills, Calif. [u.a.]: Sage Publ.

Chicago

Sage Publications, . 1979. Sage research progress series in evaluation. Beverly Hills, Calif. [u.a.]: Sage Publ.

Harvard

Sage Publications, . (1979). Sage research progress series in evaluation. Beverly Hills, Calif. [u.a.]: Sage Publ.

MLA

Sage Publications, . Sage research progress series in evaluation. Beverly Hills, Calif. [u.a.]: Sage Publ. 1979.