Hamp, E. P., Gutiérrez, A. L., & Rankin, E. (1979). Composition plus level F. Harper and Row.
Chicagoスタイル(17版)引用形式Hamp, Eric P., Arturo Luis Gutiérrez, , Earl Rankin. Composition Plus Level F. Harper and Row, 1979.
MLA(9版)引用形式Hamp, Eric P., et al. Composition Plus Level F. Harper and Row, 1979.
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