Gaya APA

Riska, D, O. (1969). Topics in Theoretical Physics; Proceedings of the Fourth Finnish Summer...Finland,1968 . New York: Gordon and Breach Science Publishers..

Gaya MLA

Riska, Dan, Olof. "Topics in Theoretical Physics; Proceedings of the Fourth Finnish Summer...Finland,1968". New York: Gordon and Breach Science Publishers., 1969. Text.