Helsdingen, W. H. v., & Hoogenberk, H. (1945). Mission interrupted: The Dutch in the East Indies and their work in the XXth century, a symposium. Elsevier.
Lua i Stíl Chicago (17ú heag.)Helsdingen, Willem Henri van, agus H. Hoogenberk. Mission Interrupted: The Dutch in the East Indies and Their Work in the XXth Century, a Symposium. Amsterdam: Elsevier, 1945.
Lua MLA (9ú heag.)Helsdingen, Willem Henri van, agus H. Hoogenberk. Mission Interrupted: The Dutch in the East Indies and Their Work in the XXth Century, a Symposium. Elsevier, 1945.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.