Spencer, J. F. (2007). Science month-by-month, grades 3-8: Practical ideas and activities for teachers and homeschoolers. Jossey-Bass.
Цитирование в стиле Чикаго (17-е изд.)Spencer, Julia Farish. Science Month-by-month, Grades 3-8: Practical Ideas and Activities for Teachers and Homeschoolers. San Francisco: Jossey-Bass, 2007.
Цитирование MLA (9-е изд.)Spencer, Julia Farish. Science Month-by-month, Grades 3-8: Practical Ideas and Activities for Teachers and Homeschoolers. Jossey-Bass, 2007.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.