APA

(1973). Sage library of social research. Beverly Hills, Calif. [u.a.]: Sage.

Chicago

1973. Sage library of social research. Beverly Hills, Calif. [u.a.]: Sage.

Harvard

(1973). Sage library of social research. Beverly Hills, Calif. [u.a.]: Sage.

MLA

Sage library of social research. Beverly Hills, Calif. [u.a.]: Sage. 1973.