- Workbook to accompany Deutsch: Na klar! An Introductory German Course
- Workbook for Deutsch: Na Klar! Workbook for Deutsch: Na Klar!
- Alles Gute: Basic German for Communication
- Alles in allem (Readings & Activities): An Intermediate German Course (Student Edition)
- Workbook to accompany Deutsch: Na klar! An Introductory German Course
- John E. Crean
- Gerhard F. Strasser
- The Pilgrim Press
- Beate Engel-Doyle
- Walter F.W. Lohnes
- Justin Jon Rudelson
- Tayfun Caga
- Virginia M. Coombs
- Erich Berger
- Ksana Kiiw
- T. Bruce Fryer
- William Flint Smith
- Ronald C. Cere
- Yasin M. Alkalesi
- Shou-Ying Lin
- Somsong Buasai
- John E. Crean Jr.
- Renate A. Schulz
- Isabelle Salaun-Gorrell
- Somsong