APA Style

Spencer, Jack. (). Houghton Mifflin : Saving Planet Earth ( Lv S 6.1.4 ) . Florida: Houghton Mifflin Harcourt.

Chicago Style

Spencer, Jack. Houghton Mifflin : Saving Planet Earth ( Lv S 6.1.4 ). Florida: Houghton Mifflin Harcourt, . Printed Book.

MLA Style

Spencer, Jack. Houghton Mifflin : Saving Planet Earth ( Lv S 6.1.4 ). Florida: Houghton Mifflin Harcourt, . Printed Book.

Turabian Style

Spencer, Jack. Houghton Mifflin : Saving Planet Earth ( Lv S 6.1.4 ). Florida: Houghton Mifflin Harcourt, . Printed Book.