Biology, an environmental approach :
a series of five books adapted from High school biology (the 'green version') by permission of Biological Sciences Curriculum Study, Boulder, Colorado /
adaptation team, director, Elizabeth Perrott, team members, Eric A. H. Martin ... [et. al.]

APA Citation

Biological Sciences Curriculum Study., Perrott, E. (1972). Biology, an environmental approach: a series of five books adapted from High school biology (the 'green version') by permission of Biological Sciences Curriculum Study, Boulder, Colorado. London: J. Murray.

MLA Citation

Biological Sciences Curriculum Study, and Elizabeth Perrott. Biology, an Environmental Approach: a Series of Five Books Adapted From High School Biology (the 'green Version') by Permission of Biological Sciences Curriculum Study, Boulder, Colorado. London: J. Murray, 1972.

Warning: These citations may not always be complete (especially for serials).