APA

Greenfield Marjorie, Spock B. M. & Dr Spock Company. (2003). Dr. Spock’s pregnancy guide. New York: Pocket Books.

Chicago

Greenfield Marjorie, Spock Benjamin McLane and Dr Spock Company. 2003. Dr. Spock’s pregnancy guide. New York: Pocket Books.

Harvard

Greenfield Marjorie, Spock B. M. and Dr Spock Company. (2003). Dr. Spock’s pregnancy guide. New York: Pocket Books.

MLA

Greenfield Marjorie, Spock Benjamin McLane and Dr Spock Company. Dr. Spock’s pregnancy guide. New York: Pocket Books. 2003.