Spalek, J., Hawrylchak, S. H., & Spalek, J. (1992). Guide to the archival materials of the german-speaking emigration to the United States after 1933, Vol. 2. Francke.
Chicago-viite (17. p.)Spalek, John, Sandra H. Hawrylchak, ja John Spalek. Guide to the Archival Materials of the German-speaking Emigration to the United States After 1933, Vol. 2. Bern: Francke, 1992.
MLA-viite (8. p.)Spalek, John, et al. Guide to the Archival Materials of the German-speaking Emigration to the United States After 1933, Vol. 2. Francke, 1992.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.