APA (7th ed.) Citation

THORNHILL. (1997). Before and after: A book of nature timescapes. National Geographic Society.

Chicago Style (17th ed.) Citation

THORNHILL. Before and After: A Book of Nature Timescapes. Washington: National Geographic Society, 1997.

MLA (9th ed.) Citation

THORNHILL. Before and After: A Book of Nature Timescapes. National Geographic Society, 1997.

Warning: These citations may not always be 100% accurate.