Interaction Science Curriculum Project. (1971). Interaction of earth & time, teacher's edition: Interaction Science Curriculum Project (2nd experimental ed.). Rand McNally.
Цитирование в стиле Чикаго (17-е изд.)Interaction Science Curriculum Project. Interaction of Earth & Time, Teacher's Edition: Interaction Science Curriculum Project. 2nd experimental ed. Illinois: Rand McNally, 1971.
Цитирование MLA (9-е изд.)Interaction Science Curriculum Project. Interaction of Earth & Time, Teacher's Edition: Interaction Science Curriculum Project. 2nd experimental ed. Rand McNally, 1971.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.