APA Style

Mayer, Mercer. (2008). Little Critter: It's Earth Day! . : HarperCollins.

Chicago Style

Mayer, Mercer. Little Critter: It's Earth Day!. : HarperCollins, 2008. Text Book.

MLA Style

Mayer, Mercer. Little Critter: It's Earth Day!. : HarperCollins, 2008. Text Book.

Turabian Style

Mayer, Mercer. Little Critter: It's Earth Day!. : HarperCollins, 2008. Text Book.