APA (7th ed.) Citation

(1920). Was die Wandervögel singen: [Textbuch]. Birnbach.

Chicago Style (17th ed.) Citation

Was Die Wandervögel Singen: [Textbuch]. Berlin: Birnbach, 1920.

MLA (9th ed.) Citation

Was Die Wandervögel Singen: [Textbuch]. Birnbach, 1920.

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