APA (7th ed.) Citation

Goldsworthy, S. (2015). Niagara falls: North America's largest waterfall. AV by Weigl.

Chicago Style (17th ed.) Citation

Goldsworthy, Steve. Niagara Falls: North America's Largest Waterfall. New York: AV by Weigl, 2015.

MLA (9th ed.) Citation

Goldsworthy, Steve. Niagara Falls: North America's Largest Waterfall. AV by Weigl, 2015.

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