Carin, A. A., & Sund, R. B. (1989). Guided discovery activities for elementary school science (2nd ed.). Merrill.
Цитирование в стиле Чикаго (17-е изд.)Carin, Arthur A., и Robert B. Sund. Guided Discovery Activities for Elementary School Science. 2nd ed. Columbus, Ohio: Merrill, 1989.
Цитирование MLA (9-е изд.)Carin, Arthur A., и Robert B. Sund. Guided Discovery Activities for Elementary School Science. 2nd ed. Merrill, 1989.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.