APA (7th ed.) Citation

Christ, H. I., & Tressler, J. C. (1978). Modern English in action [Level 7-12]: Manual and answer book (Teacher's ed.). Heath.

Chicago Style (17th ed.) Citation

Christ, Henry I., and Jacob Cloyd Tressler. Modern English in Action [Level 7-12]: Manual and Answer Book. Teacher's ed. Lexington, Mass.: Heath, 1978.

MLA (9th ed.) Citation

Christ, Henry I., and Jacob Cloyd Tressler. Modern English in Action [Level 7-12]: Manual and Answer Book. Teacher's ed. Heath, 1978.