APA

United States, . (1970). Comprehensive preschool education and child day-care act of 1969: Hearings, Ninety-first Congress, first and second sessions, on H.R. 13520. Washington: U.S. Govt. Print. Off.

Chicago

United States, . 1970. Comprehensive preschool education and child day-care act of 1969: Hearings, Ninety-first Congress, first and second sessions, on H.R. 13520. Washington: U.S. Govt. Print. Off.

Harvard

United States, . (1970). Comprehensive preschool education and child day-care act of 1969: Hearings, Ninety-first Congress, first and second sessions, on H.R. 13520. Washington: U.S. Govt. Print. Off.

MLA

United States, . Comprehensive preschool education and child day-care act of 1969: Hearings, Ninety-first Congress, first and second sessions, on H.R. 13520. Washington: U.S. Govt. Print. Off. 1970.