Burton, V. L. (1967). Mike Mulligan and his steam shovel: Story and pictures. Houghton Mifflin.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBurton, Virginia Lee. Mike Mulligan and His Steam Shovel: Story and Pictures. Boston: Houghton Mifflin, 1967.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBurton, Virginia Lee. Mike Mulligan and His Steam Shovel: Story and Pictures. Houghton Mifflin, 1967.
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