APA (7th ed.) Citation

McCallum, S. H., & Godwin, J. L. (1981). Statistics on Headings in the MARC File.

Chicago Style (17th ed.) Citation

McCallum, Sally H., and James L. Godwin. Statistics on Headings in the MARC File. 1981.

MLA (9th ed.) Citation

McCallum, Sally H., and James L. Godwin. Statistics on Headings in the MARC File. 1981.

Warning: These citations may not always be 100% accurate.