APA (7th ed.) Citation

Klinge, A., & Bache, C. (1998). Mastering English: A student's workbook and guide. Mouton de Gruyter.

Chicago Style (17th ed.) Citation

Klinge, Alex, and Carl Bache. Mastering English: A Student's Workbook and Guide. Berlin: Mouton de Gruyter, 1998.

MLA (9th ed.) Citation

Klinge, Alex, and Carl Bache. Mastering English: A Student's Workbook and Guide. Mouton de Gruyter, 1998.