Citazione APA

Ferris, F. K., Keener, E. E., & Giddings, A. F. (1944). Learning essential English: [Grade] 3-8. Laidlaw.

Stile di citazione Chicago

Ferris, Florence K., Edward Ernest Keener, e Arthur F. Giddings. Learning Essential English: [Grade] 3-8. Chicago ; New York [etc.]: Laidlaw, 1944.

Citazione MLA

Ferris, Florence K., et al. Learning Essential English: [Grade] 3-8. Laidlaw, 1944.