Viorst, J. (1967). The changing earth. New York: Bantam Books.
Trích dẫn kiểu ChicagoViorst, Judith. The Changing Earth. New York: Bantam Books, 1967.
MLA引文Viorst, Judith. The Changing Earth. New York: Bantam Books, 1967.
警告：这些引文格式不一定是100％准确.
APA引文