APA

Richardson E. G., . (1953). Sound: A physical textbook. : English Language Book Society, London.

Chicago

Richardson E G, . 1953. Sound: A physical textbook. : English Language Book Society, London.

Harvard

Richardson E. G., . (1953). Sound: A physical textbook. : English Language Book Society, London.

MLA

Richardson E G, . Sound: A physical textbook. : English Language Book Society, London. 1953.