Kevin Henkes. (2012). Penny and her song. Greenwillow Books.
芝加哥风格引文Kevin Henkes. Penny and Her Song. New York: Greenwillow Books, 2012.
MLA引文Kevin Henkes. Penny and Her Song. Greenwillow Books, 2012.
警告：这些引文格式不一定是100％准确.
APA引文