Hagen, S. A., & Grogan, P. E. (1992). Sound advantage: A pronunciation book. Prentice Hall Regents.
Chicagoスタイル(17版)引用形式Hagen, Stacy A., , Patricia E. Grogan. Sound Advantage: A Pronunciation Book. Englewood Cliffs, N.J: Prentice Hall Regents, 1992.
MLA(9版)引用形式Hagen, Stacy A., , Patricia E. Grogan. Sound Advantage: A Pronunciation Book. Prentice Hall Regents, 1992.
警告: この引用は必ずしも正確ではありません.