HARMET, R. A. 1991. The world book health and medical annual 1992. Chicago: World Book.
Citace podle APA (7th ed.)Harmet, R. A. (1991). The world book health and medical annual 1992. World Book.
Citace podle Chicago (17th ed.)Harmet, Richard A. The World Book Health and Medical Annual 1992. Chicago: World Book, 1991.
Citace podle MLA (9th ed.)Harmet, Richard A. The World Book Health and Medical Annual 1992. World Book, 1991.
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