MLA

Henri, Adrian. Environments and Happenings. : with 150 Illustrations, 30 In Colour. London,: Thames and Hudson, 1974.

APA

Henri, A. (1974). Environments and happenings. : with 150 illustrations, 30 in colour. London,: Thames and Hudson.

Chicago

Henri, Adrian. Environments and Happenings.: With 150 Illustrations, 30 In Colour. London,: Thames and Hudson, 1974.