(1961). 100 problems in environmental health: A collection of promising research problems. Washington: Kirby Lithograph.
Citação norma Chicago100 Problems in Environmental Health: A Collection of Promising Research Problems. Washington: Kirby Lithograph, 1961.
Citação norma MLA100 Problems in Environmental Health: A Collection of Promising Research Problems. Washington: Kirby Lithograph, 1961.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.