National Council of Teachers of English. Committee on Reading Ladders for Human Relations & Tway, E. (1981). Reading ladders for human relations (6th ed.). American Council on Education ; National Council of Teachers of English.
芝加哥风格引文National Council of Teachers of English. Committee on Reading Ladders for Human Relations 与 Eileen Tway. Reading Ladders for Human Relations. 6th ed. Washington, D.C. : Urbana, Ill.: American Council on Education ; National Council of Teachers of English, 1981.
MLA引文National Council of Teachers of English. Committee on Reading Ladders for Human Relations 与 Eileen Tway. Reading Ladders for Human Relations. 6th ed. American Council on Education ; National Council of Teachers of English, 1981.