Tohutoro APA (7th ed.)
Petersen, R. A. (1991). Health issues for secondary teachers. Kendall/Hunt.
Tohutoru Kātū Chicago (17th ed.)
Petersen, Ray A. Health Issues for Secondary Teachers. Dbuque, Iowa: Kendall/Hunt, 1991.
Tohutoro MLA (9th ed.)
Petersen, Ray A. Health Issues for Secondary Teachers. Kendall/Hunt, 1991.
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