APA (7th ed.) Citation

Hopkinson, D., & Ransome, J. (2006). Sky boys: How they built the Empire State Building. Schwartz & Wade Books.

Chicago Style (17th ed.) Citation

Hopkinson, Deborah, and James Ransome. Sky Boys: How They Built the Empire State Building. New York: Schwartz & Wade Books, 2006.

MLA (8th ed.) Citation

Hopkinson, Deborah, and James Ransome. Sky Boys: How They Built the Empire State Building. Schwartz & Wade Books, 2006.

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