Citazione Stile APA (7a Edizione)

Harvey, W. S., & Downs-Rose, G. (1980). William Symington: Inventor and engine builder. Northgate Pub. Co..

Citazione stile Chigago Style (17a edizione)

Harvey, W. S., e G. Downs-Rose. William Symington: Inventor and Engine Builder. London: Northgate Pub. Co., 1980.

Citatione MLA (8a ed.)

Harvey, W. S., e G. Downs-Rose. William Symington: Inventor and Engine Builder. Northgate Pub. Co., 1980.