Styl cytowania APA

Crowther, J. G. (1966). Discoveries and inventions of the 20th Century. Routledge and kegan paul.

Styl cytowania Chicago

Crowther, J G. Discoveries and Inventions of the 20th Century. London: Routledge and kegan paul, 1966.

Styl cytowania MLA

Crowther, J G. Discoveries and Inventions of the 20th Century. Routledge and kegan paul, 1966.