Palen, S. 1. (2012). Understanding our universe. New York, NY: W.W. Norton.
Trích dẫn kiểu ChicagoPalen, Stacy. 1957-. Understanding Our Universe. New York, NY: W.W. Norton, 2012.
MLA引文Palen, Stacy. 1957-. Understanding Our Universe. New York, NY: W.W. Norton, 2012.
警告:這些引文格式不一定是100%准確.