APA (7th ed.) Citation

Gibson, J. M., Meyer, P. H., & Schaffrath, S. D. Building English skills: Blue level, teacher's manual.

Chicago Style (17th ed.) Citation

Gibson, Janet M., Patricia Hoepfner Meyer, and Susan Duffy Schaffrath. Building English Skills: Blue Level, Teacher's Manual.

MLA (9th ed.) Citation

Gibson, Janet M., et al. Building English Skills: Blue Level, Teacher's Manual.