Yost, E. (1949). Frank and Lillain Gilbreth, partners for life. American Society of Mechanical Engineers.
Chicago (17e ed.) BronvermeldingYost, Edna. Frank and Lillain Gilbreth, Partners for Life. New York: American Society of Mechanical Engineers, 1949.
MLA (9e ed.) BronvermeldingYost, Edna. Frank and Lillain Gilbreth, Partners for Life. American Society of Mechanical Engineers, 1949.
Let op: Deze citaties zijn niet altijd 100% accuraat.