APA Style

Heimann's, Rolf. (2003). Creepy Conundrums : Spine-Chilling Mazes and Puzzles . London: Penguin Books.

Chicago Style

Heimann's, Rolf. Creepy Conundrums : Spine-Chilling Mazes and Puzzles. London: Penguin Books, 2003. Text.

MLA Style

Heimann's, Rolf. Creepy Conundrums : Spine-Chilling Mazes and Puzzles. London: Penguin Books, 2003. Text.

Turabian Style

Heimann's, Rolf. Creepy Conundrums : Spine-Chilling Mazes and Puzzles. London: Penguin Books, 2003. Print.