APA (7th ed.) Citation

JOHNSON, W. E. (1889). Proof of the Parallelogram of Forces. Nature Publishing Group.

Chicago Style (17th ed.) Citation

JOHNSON, W. E. Proof of the Parallelogram of Forces. [s.l.]: Nature Publishing Group, 1889.

MLA (9th ed.) Citation

JOHNSON, W. E. Proof of the Parallelogram of Forces. Nature Publishing Group, 1889.