APA (7th ed.) Citation

Churgin, J., & Heckendorff, H. (1970). Formeln - und was dann ? (o.A.). Verlag Technik.

Chicago Style (17th ed.) Citation

Churgin, J., and H. Heckendorff. Formeln - Und Was Dann ? o.A. Berlin: Verlag Technik, 1970.

MLA (8th ed.) Citation

Churgin, J., and H. Heckendorff. Formeln - Und Was Dann ? o.A. Verlag Technik, 1970.

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