APA Style

Whelan, Gloria. (1996). Once on this island . New York :: Harper Trophy.

Chicago Style

Whelan, Gloria. Once on this island. New York :: Harper Trophy, 1996. Text.

MLA Style

Whelan, Gloria. Once on this island. New York :: Harper Trophy, 1996. Text.

Turabian Style

Whelan, Gloria. Once on this island. New York :: Harper Trophy, 1996. Print.