Blake, J., & Ernst, B. (1976). The great perpetual learning machine: Being a stupendous collection of ideas, games, experiments, activities, and recommendations for further exploration, with tons of illustrations. Little, Brown.
Chicago Style (17th ed.) CitationBlake, Jim, and Barbara Ernst. The Great Perpetual Learning Machine: Being a Stupendous Collection of Ideas, Games, Experiments, Activities, and Recommendations for Further Exploration, with Tons of Illustrations. Boston: Little, Brown, 1976.
MLA (8th ed.) CitationBlake, Jim, and Barbara Ernst. The Great Perpetual Learning Machine: Being a Stupendous Collection of Ideas, Games, Experiments, Activities, and Recommendations for Further Exploration, with Tons of Illustrations. Little, Brown, 1976.
Warning: These citations may not always be 100% accurate.