Hungerford, H. R. (1988). An environmental education approach to the training of elementary teacher: A teacher education programme. Unesco Division of Science, Technology and Environmental Education.
Citace podle Chicago (17th ed.)Hungerford, Harold R. An Environmental Education Approach to the Training of Elementary Teacher: A Teacher Education Programme. [Paris]: Unesco Division of Science, Technology and Environmental Education, 1988.
Citace podle MLA (9th ed.)Hungerford, Harold R. An Environmental Education Approach to the Training of Elementary Teacher: A Teacher Education Programme. Unesco Division of Science, Technology and Environmental Education, 1988.
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