APA (7th ed.) Citation

Hallgren, R. C. (1983). Interface projects for the APPLE II. National Book store.

Chicago Style (17th ed.) Citation

Hallgren, Richard C. Interface Projects for the APPLE II. Manila: National Book store, 1983.

MLA (9th ed.) Citation

Hallgren, Richard C. Interface Projects for the APPLE II. National Book store, 1983.