APA (7th ed.) Citation

Meulen, S. G. v. d., & Lindsey, C. H. (1970). Informal introduction to ALGOL 68. Mathematisch Centrum.

Chicago Style (17th ed.) Citation

Meulen, Siete G. van der, and Charles H. Lindsey. Informal Introduction to ALGOL 68. Amsterdam: Mathematisch Centrum, 1970.

MLA (9th ed.) Citation

Meulen, Siete G. van der, and Charles H. Lindsey. Informal Introduction to ALGOL 68. Mathematisch Centrum, 1970.