APA

Heirich M., . (1971). The spiral of conflict: Berkeley, 1964. New York: Columbia University Press.

Chicago

Heirich Max, . 1971. The spiral of conflict: Berkeley, 1964. New York: Columbia University Press.

Harvard

Heirich M., . (1971). The spiral of conflict: Berkeley, 1964. New York: Columbia University Press.

MLA

Heirich Max, . The spiral of conflict: Berkeley, 1964. New York: Columbia University Press. 1971.