APA (7th ed.) Citation

Hill, U., Scheidig, H., & Wössner, H. (1970). ALGOL 68 M.

Chicago Style (17th ed.) Citation

Hill, U., Helge Scheidig, and Hans Wössner. ALGOL 68 M. München, 1970.

MLA (9th ed.) Citation

Hill, U., et al. ALGOL 68 M. 1970.