APA Citation

Bergmann, P. G. (1968). The riddle of gravitation. New York: Charles Scribner's Sons.

Chicago Style Citation

Bergmann, Peter G. The Riddle of Gravitation. New York: Charles Scribner's Sons, 1968.

MLA Citation

Bergmann, Peter G. The Riddle of Gravitation. New York: Charles Scribner's Sons, 1968.

Warning: These citations may not always be 100% accurate.