Gaya APA

GALTUNG, J., STEVENTS, T. (1973). Theory and methods of social research / Johan Galtung (Cet.4). London: George Allen.

Gaya MLA

GALTUNG, Johan., STEVENTS, Timon.. "Theory and methods of social research / Johan Galtung". Cet.4 London: George Allen, 1973. Text.