APA

Reader's Digest Association, . (1970). The living world of animals. London: Published by the Reader's Digest Association in Conjunction with the World Wildlife Fund.

Chicago

Reader's Digest Association, . 1970. The living world of animals. London: Published by the Reader's Digest Association in Conjunction with the World Wildlife Fund.

Harvard

Reader's Digest Association, . (1970). The living world of animals. London: Published by the Reader's Digest Association in Conjunction with the World Wildlife Fund.

MLA

Reader's Digest Association, . The living world of animals. London: Published by the Reader's Digest Association in Conjunction with the World Wildlife Fund. 1970.