APA (7th ed.) Citation

Schmidt, G., & Ritter, J. (1953). Wunderwelt der Steine (1.-10. Tausend.). Wunderlich.

Chicago Style (17th ed.) Citation

Schmidt, Gerhard, and Jürgen Ritter. Wunderwelt Der Steine. 1.-10. Tausend. Leipzig: Wunderlich, 1953.

MLA (8th ed.) Citation

Schmidt, Gerhard, and Jürgen Ritter. Wunderwelt Der Steine. 1.-10. Tausend. Wunderlich, 1953.

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