APA (7th ed.) Citation

Schmitz, A., & Schmitz, E. (1994). Toolbox: English for technical purposes. Hueber.

Chicago Style (17th ed.) Citation

Schmitz, Albert, and Edith Schmitz. Toolbox: English for Technical Purposes. Ismaning: Hueber, 1994.

MLA (9th ed.) Citation

Schmitz, Albert, and Edith Schmitz. Toolbox: English for Technical Purposes. Hueber, 1994.

Warning: These citations may not always be 100% accurate.