Instituto Nacional de Normalización. (2007). Geometrical product specifications GPS Dimensional and geometrical tolerances for moulded parts: Part 3. General dimensional and geometrical tolerances and machining allowances for casting (1a. ed.). INN.
Chicago (17e ed.) BronvermeldingInstituto Nacional de Normalización. Geometrical Product Specifications GPS Dimensional and Geometrical Tolerances for Moulded Parts: Part 3. General Dimensional and Geometrical Tolerances and Machining Allowances for Casting. 1a. ed. Ginebra: INN, 2007.
MLA (9e ed.) BronvermeldingInstituto Nacional de Normalización. Geometrical Product Specifications GPS Dimensional and Geometrical Tolerances for Moulded Parts: Part 3. General Dimensional and Geometrical Tolerances and Machining Allowances for Casting. 1a. ed. INN, 2007.