APA (7th ed.) Citation

Parker, R. B., & Atkins, A. (2012). Robert B. Parker's lullaby. G.P. Putnam's Sons.

Chicago Style (17th ed.) Citation

Parker, Robert B., and Ace Atkins. Robert B. Parker's Lullaby. New York: G.P. Putnam's Sons, 2012.

MLA (8th ed.) Citation

Parker, Robert B., and Ace Atkins. Robert B. Parker's Lullaby. G.P. Putnam's Sons, 2012.

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