Hill, D. A. (2013). Life: Pre-Intermediate. Teacher's Book (1a. ed.). National Geographic Learning.
Chicagoスタイル(17版)引用形式Hill, David A. Life: Pre-Intermediate. Teacher's Book. 1a. ed. Hampshire: National Geographic Learning, 2013.
MLA(9版)引用形式Hill, David A. Life: Pre-Intermediate. Teacher's Book. 1a. ed. National Geographic Learning, 2013.
警告: この引用は必ずしも正確ではありません.