APA (7e ed.) Bronvermelding

Prpic, G. J. (1970). A century of world communism ; a selective chronolgical outline. Baron's Educational Series.

Chicago (17e ed.) Bronvermelding

Prpic, George J. A Century of World Communism ; a Selective Chronolgical Outline. Woodbury, N. Y: Baron's Educational Series, 1970.

MLA (9e ed.) Bronvermelding

Prpic, George J. A Century of World Communism ; a Selective Chronolgical Outline. Baron's Educational Series, 1970.