APA

United States, . (1956). Your child from one to six. [Washington: U.S. Government Printing Office.

Chicago

United States, . 1956. Your child from one to six. [Washington: U.S. Government Printing Office.

Harvard

United States, . (1956). Your child from one to six. [Washington: U.S. Government Printing Office.

MLA

United States, . Your child from one to six. [Washington: U.S. Government Printing Office. 1956.