Keany, M. (1981). Earth Science laboratory/activity book: Annotated teacher's edition. Prentice Hall.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKeany, Michael. Earth Science Laboratory/activity Book: Annotated Teacher's Edition. Prentice Hall, 1981.
एमएलए (9वां संस्करण) प्रशस्ति पत्रKeany, Michael. Earth Science Laboratory/activity Book: Annotated Teacher's Edition. Prentice Hall, 1981.
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