Kernan, D. (1975). Steps to English (Teacher's ed.). McGraw-Hill.
Chicagoスタイル(17版)引用形式Kernan, Doris. Steps to English. Teacher's ed. New York ; St. Louis [etc.]: McGraw-Hill, 1975.
MLA(8版)引用形式Kernan, Doris. Steps to English. Teacher's ed. McGraw-Hill, 1975.
警告: この引用は必ずしも正確ではありません.