APA (7th ed.) Citation

(1981). Specification for general writing lead pencils. bureau of ceylon standards.

Chicago Style (17th ed.) Citation

Specification for General Writing Lead Pencils. Colombo: bureau of ceylon standards, 1981.

MLA (9th ed.) Citation

Specification for General Writing Lead Pencils. bureau of ceylon standards, 1981.

Warning: These citations may not always be 100% accurate.