Cita APA

Crowther, J. G. (1955). Discoveries and inventions of the 20th century (4. ed.). London: Reutlegge & Kegan Paul.

Citación estilo Chicago

Crowther, J. G. Discoveries and Inventions of the 20th Century. 4. ed. London: Reutlegge & Kegan Paul, 1955.

Cita MLA

Crowther, J. G. Discoveries and Inventions of the 20th Century. 4. ed. London: Reutlegge & Kegan Paul, 1955.