Lawrence L. Rettig Grammatical structures in Amana German. Dissertation at the University of Iowa, 1970.
Liffring-Zug J. Life in Amana: reporters' views of the communal way, 1867 - 1935. Iowa City, 1998.
Putnam M. T. Anaphors in contact: The distribution of intensifiers and reflexives in Amana German in "Studies on German-language islands". Amsterdam et al., 2011.
Webber P. E. Kolonie-Deutsch: Life and Language in Amana. Ames, 2006.