Hughes, J. L. (1962). Programed instruction for schools and industry. Science Research Associates.
Цитирование в стиле Чикаго (17-е изд.)Hughes, John Leo. Programed Instruction for Schools and Industry. Chicago: Science Research Associates, 1962.
Цитирование MLA (9-е изд.)Hughes, John Leo. Programed Instruction for Schools and Industry. Science Research Associates, 1962.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.