Awdry, W., & Courtney, R. (2012). Secret of the green engine. Random House.
芝加哥风格引文Awdry, W., 与 Richard Courtney. Secret of the Green Engine. New York: Random House, 2012.
MLA引文Awdry, W., 与 Richard Courtney. Secret of the Green Engine. Random House, 2012.
警告：这些引文格式不一定是100％准确.