APA Style

Galfard, Christophe. (2100). George's Secret Key to the Universe . unknown: E.J Arnold & Son Ltd.

Chicago Style

Galfard, Christophe. George's Secret Key to the Universe. unknown: E.J Arnold & Son Ltd, 2100. Text.

MLA Style

Galfard, Christophe. George's Secret Key to the Universe. unknown: E.J Arnold & Son Ltd, 2100. Text.

Turabian Style

Galfard, Christophe. George's Secret Key to the Universe. unknown: E.J Arnold & Son Ltd, 2100. Print.