APA (7th ed.) Citation

Heleen. (1924). Jopie's wollen aapje. Callenbach.

Chicago Style (17th ed.) Citation

Heleen. Jopie's Wollen Aapje. Nijkerk: Callenbach, 1924.

MLA (9th ed.) Citation

Heleen. Jopie's Wollen Aapje. Callenbach, 1924.

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