APA (7th ed.) Citation

International Labour Organisation & United Nations Development Programme. (1991). Stone masonry. International Labour Office.

Chicago Style (17th ed.) Citation

International Labour Organisation and United Nations Development Programme. Stone Masonry. Geneva: International Labour Office, 1991.

MLA (9th ed.) Citation

International Labour Organisation and United Nations Development Programme. Stone Masonry. International Labour Office, 1991.

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