APA (7th ed.) Citation

Haas, J., & Haas, J. (1978). Impromptu. Eres.

Chicago Style (17th ed.) Citation

Haas, Joseph, and Joseph Haas. Impromptu. Bremen: Eres, 1978.

MLA (9th ed.) Citation

Haas, Joseph, and Joseph Haas. Impromptu. Eres, 1978.

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