APA (7th ed.) Citation

Penkala, E. (1961). WUNDER DES WELTALLS. Frank'Sche Verlagshandlung.

Chicago Style (17th ed.) Citation

Penkala, Eduard. WUNDER DES WELTALLS. Sttutgart: Frank'Sche Verlagshandlung, 1961.

MLA (9th ed.) Citation

Penkala, Eduard. WUNDER DES WELTALLS. Frank'Sche Verlagshandlung, 1961.

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