Citação norma APA

Johnson,R, & Johnson, R. (1981). Food safety Services. Regional Office for Europe, World Health Organization ; Available from WHO Publications Centre USA].

Citação norma Chicago

Johnson,R, and R. Johnson. Food Safety Services. Copenhagen : [Albany, N.Y.: Regional Office for Europe, World Health Organization ; Available from WHO Publications Centre USA], 1981.

Citação norma MLA

Johnson,R, and R. Johnson. Food Safety Services. Regional Office for Europe, World Health Organization ; Available from WHO Publications Centre USA], 1981.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.