APA (7th ed.) Citation

Astesiano, E., & Wirsing, M. (1986). An introduction to ASL.

Chicago Style (17th ed.) Citation

Astesiano, Egidio, and Martin Wirsing. An Introduction to ASL. Passau, 1986.

MLA (9th ed.) Citation

Astesiano, Egidio, and Martin Wirsing. An Introduction to ASL. 1986.