Steig, W. (1969). Sylvester and the magic pebble. Scholastic Inc.
芝加哥风格引文Steig, William. Sylvester and the Magic Pebble. New York: Scholastic Inc, 1969.
MLA引文Steig, William. Sylvester and the Magic Pebble. Scholastic Inc, 1969.
警告：这些引文格式不一定是100％准确.