APA (7th ed.) Citation

Wagner, M. L., & Kröll, H. (1990). Sondersprachen der Romania. Steiner.

Chicago Style (17th ed.) Citation

Wagner, Max Leopold, and Heinz Kröll. Sondersprachen Der Romania. Stuttgart: Steiner, 1990.

MLA (8th ed.) Citation

Wagner, Max Leopold, and Heinz Kröll. Sondersprachen Der Romania. Steiner, 1990.

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