APA Style

WOLFF, L., SPENCER, G. (1957). The World of Nature, the Story of Living Things: the modern children's library of knowledge, Book One (2). London: The Grolier Society Ltd..

MLA Style

WOLFF, LESLIE., SPENCER, GEOFFREY. "The World of Nature, the Story of Living Things: the modern children's library of knowledge, Book One". 2 London: The Grolier Society Ltd., 1957. Text.