APA (7th ed.) Citation

Percival, A. S. (1921). Perspective: The old and the new method. Longmans, Green and co..

Chicago Style (17th ed.) Citation

Percival, A. S. Perspective: The Old and the New Method. London, New York [etc.]: Longmans, Green and co., 1921.

MLA (8th ed.) Citation

Percival, A. S. Perspective: The Old and the New Method. Longmans, Green and co., 1921.