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.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিInstituto 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.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিInstituto 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.