Current trends in European sign language research :

MLA

Prillwitz, Siegmund, and Tomas Vollhaber. Current Trends In European Sign Language Research . Hamburg: Signum-Press, 1990.

APA

Prillwitz, S., & Vollhaber, T. (1990). Current trends in European sign language research . Hamburg: Signum-Press.

Chicago

Prillwitz, Siegmund, ed., and Tomas Vollhaber ed. Current Trends In European Sign Language Research :. Hamburg: Signum-Press, 1990.