APA

(1957). Was in Ungarn geschah?. Freiburg: Herder.

Chicago

1957. Was in Ungarn geschah?. Freiburg: Herder.

Harvard

(1957). Was in Ungarn geschah?. Freiburg: Herder.

MLA

Was in Ungarn geschah?. Freiburg: Herder. 1957.