APA引文

Ashbrook, P. (2003). Science is simple: Over 250 activities for preschoolers. Gryphon House.

Chicago Style (17th ed.) Citation

Ashbrook, Peggy. Science Is Simple: Over 250 Activities for Preschoolers. Beltsville, Md: Gryphon House, 2003.

MLA引文

Ashbrook, Peggy. Science Is Simple: Over 250 Activities for Preschoolers. Gryphon House, 2003.