APA (7th ed.) Citation

Elordi Barrena, J. (1982). APL, a programming language. [s.n.].

Chicago Style (17th ed.) Citation

Elordi Barrena, Julián. APL, a Programming Language. [S.l.]: [s.n.], 1982.

MLA (9th ed.) Citation

Elordi Barrena, Julián. APL, a Programming Language. [s.n.], 1982.

Warning: These citations may not always be 100% accurate.