APA (7th ed.) Citation

Packer, L. S. (1953). Exact computing linkage. Machine Design, 25, 171.

Chicago Style (17th ed.) Citation

Packer, L. S. "Exact Computing Linkage." Machine Design 25 (1953): 171.

MLA (9th ed.) Citation

Packer, L. S. "Exact Computing Linkage." Machine Design, vol. 25, 1953, p. 171.