John Seymor, H. G. i. b. I. P. Blueprint for a green planet: Your practical guide to restoring the world-s environment. Dorling Kindersley.
Čikaški stil citiranja (17. izdanje)John Seymor, Herbert Girardet illustrated by Ian Penney. Blueprint for a Green Planet: Your Practical Guide to Restoring the World-s Environment. Dorling Kindersley.
MLA način citiranja (8. izdanje)John Seymor, Herbert Girardet illustrated by Ian Penney. Blueprint for a Green Planet: Your Practical Guide to Restoring the World-s Environment. Dorling Kindersley.
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