APA (7th ed.) Citation

Fallentin, M. C. (1923). De blauwe enveloppe. Callenbach.

Chicago Style (17th ed.) Citation

Fallentin, M. C. De Blauwe Enveloppe. Nijkerk: Callenbach, 1923.

MLA (9th ed.) Citation

Fallentin, M. C. De Blauwe Enveloppe. Callenbach, 1923.

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