Gaya APA

Popper, K. (1978). Unended quest, an intellectual autobiography, (4th impr.). Cet.pertama 1976. . Collins: Fontana.

Gaya MLA

Popper, Karl.. "Unended quest, an intellectual autobiography, (4th impr.). Cet.pertama 1976. ". Collins: Fontana, 1978. Buku.