APA (7th ed.) Citation

Businger, A. (1988). PORTAL language description (2nd. extended ed.). Springer-Verlag.

Chicago Style (17th ed.) Citation

Businger, Arnold. PORTAL Language Description. 2nd. extended ed. Berlin ; New York: Springer-Verlag, 1988.

MLA (9th ed.) Citation

Businger, Arnold. PORTAL Language Description. 2nd. extended ed. Springer-Verlag, 1988.

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