APA (7th ed.) Citation

Meulen, S. G. v. d., & Lindsey, C. H. (1968). Informal introduction to ALGOL 68 (2. draft.). Mathematisch Centrum.

Chicago Style (17th ed.) Citation

Meulen, Siete G. van der, and Charles H. Lindsey. Informal Introduction to ALGOL 68. 2. draft. Amsterdam: Mathematisch Centrum, 1968.

MLA (9th ed.) Citation

Meulen, Siete G. van der, and Charles H. Lindsey. Informal Introduction to ALGOL 68. 2. draft. Mathematisch Centrum, 1968.