Wade, W., & Hughes, C. (1994). Inspirations for environmental education. Scholastic.
Chicago-viite (17. p.)Wade, Winnie, ja Colin Hughes. Inspirations for Environmental Education. Warwickshire: Scholastic, 1994.
MLA-viite (9. p.)Wade, Winnie, ja Colin Hughes. Inspirations for Environmental Education. Scholastic, 1994.
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