Ellington, H., Addinall, E., & Percival, F. (1981). Games and simulations in science education. Nichols Pub. Co.
Citace podle Chicago (17th ed.)Ellington, Henry, Eric Addinall, a Fred Percival. Games and Simulations in Science Education. London :K. Page ; New York: Nichols Pub. Co, 1981.
Citace podle MLA (9th ed.)Ellington, Henry, et al. Games and Simulations in Science Education. Nichols Pub. Co, 1981.
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