- Author: Moyer Robert E., Spiegel Murray R
- Language: English
- Year: 2014
- Author: Meislich Herbert
- Language: English
- Year: 2013
- Author: Mendelson Elliott
- Language: English
- Year: 1985
- Author: Lipschutz Seymour, Liu John, Spiegel Murray R
- Language: English
- Year: 2018
- Author: Kruglak Haym, Mata-Toledo Ramon A., Moore John T
- Language: English
- Year: 2009
- Author: Bronson Richard, Costa Gabriel
- Language: English
- Year: 2014
- Author: Bronson Richard, Costa Gabriel B
- Language: English
- Year: 2006
- Author: Fred Safier
- Language: English
- Year: 2013
- Author: Elrod Susan L
- Language: English
- Year: 2011
German grammar
pdf
- Author: Feuerle Lois, Gschossmann-Hendershot Elke
- Language: English
- Year: 2014