Porter, C. (1995). Places to know in the U.S.A.: An interactive ESL readers. Thành phố Hồ Chí Minh: Trẻ.
Chicago ZitierstilPorter, Catherine. Places to Know in the U.S.A.: An Interactive ESL Readers. Thành phố Hồ Chí Minh: Trẻ, 1995.
MLA ZitierstilPorter, Catherine. Places to Know in the U.S.A.: An Interactive ESL Readers. Thành phố Hồ Chí Minh: Trẻ, 1995.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.