APA (7th ed.) Citation

Hewlett-Packard Company. Hewlett-Packard calculator model 9100A program library.

Chicago Style (17th ed.) Citation

Hewlett-Packard Company. Hewlett-Packard Calculator Model 9100A Program Library. Loveland, Colo.

MLA (9th ed.) Citation

Hewlett-Packard Company. Hewlett-Packard Calculator Model 9100A Program Library.

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