Tompkins, P., & Bird Christopher. (1973). The secret life of plants. Harper & Row Publishers.
Chicago Style (17th ed.) ZitazioaTompkins, Peter, eta Bird Christopher. The Secret Life of Plants. New York: Harper & Row Publishers, 1973.
MLA (9th ed.) ZitazioaTompkins, Peter, eta Bird Christopher. The Secret Life of Plants. Harper & Row Publishers, 1973.
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