Hamp, E. P., Gutiérrez, A. L., & Rankin, E. (1979). Composition plus level F. Harper and Row.
Tohutoru Kātū ChicagoHamp, Eric P., Arturo Luis Gutiérrez, me Earl Rankin. Composition Plus Level F. Harper and Row, 1979.
Tohutoro MLAHamp, Eric P., et al. Composition Plus Level F. Harper and Row, 1979.
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