Spencer, J. F. (2007). Science month-by-month, grades 3-8: Practical ideas and activities for teachers and homeschoolers. Jossey-Bass.
芝加哥风格引文Spencer, Julia Farish. Science Month-by-month, Grades 3-8: Practical Ideas and Activities for Teachers and Homeschoolers. San Francisco: Jossey-Bass, 2007.
MLA引文Spencer, Julia Farish. Science Month-by-month, Grades 3-8: Practical Ideas and Activities for Teachers and Homeschoolers. Jossey-Bass, 2007.
警告：这些引文格式不一定是100％准确.