Shapp, M., & Shapp, C. (1963). Let's find out about air. Franklin Watts.
Chicago Style (17. basım) AtıfShapp, Martha, ve C. Shapp. Let's Find Out About Air. New York: Franklin Watts, 1963.
MLA (9th ed.) AtıfShapp, Martha, ve C. Shapp. Let's Find Out About Air. Franklin Watts, 1963.
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