APA Style

O'Keefe, Maureen. (). The Planets . : Education Time.

Chicago Style

O'Keefe, Maureen. The Planets. : Education Time, . Text.

MLA Style

O'Keefe, Maureen. The Planets. : Education Time, . Text.

Turabian Style

O'Keefe, Maureen. The Planets. : Education Time, . Print.