APA (7th ed.) Citation

Wirth, N. (1989). From Modula to Oberon.

Chicago Style (17th ed.) Citation

Wirth, Niklaus. From Modula to Oberon. Zürich, 1989.

MLA (9th ed.) Citation

Wirth, Niklaus. From Modula to Oberon. 1989.

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