APA (7th ed.) Citation

Tanenbaum, A. S., Klint, P., & Bohm, W. (1977). Guidelines for program portability (Preprint.). Stichting Math. Centrum.

Chicago Style (17th ed.) Citation

Tanenbaum, Andrew S., Paul Klint, and Wim Bohm. Guidelines for Program Portability. Preprint. Amsterdam: Stichting Math. Centrum, 1977.

MLA (9th ed.) Citation

Tanenbaum, Andrew S., et al. Guidelines for Program Portability. Preprint. Stichting Math. Centrum, 1977.