APA

Blalock Jr, Blalock A. B., . (1968). Methodology in social research. Nova York: McGraw-Hill Book.

Chicago

Blalock Jr, Blalock Ann B, . 1968. Methodology in social research. Nova York: McGraw-Hill Book.

Harvard

Blalock Jr, Blalock A. B., . (1968). Methodology in social research. Nova York: McGraw-Hill Book.

MLA

Blalock Jr, Blalock Ann B, . Methodology in social research. Nova York: McGraw-Hill Book. 1968.