Niland, P. (1971). The quality control circle: An analysis. Singapore: Published in collaboration with the Asian Productivity Organization, Tokyo, by New York, McGraw-Hill Far Eastern Publishers.

Niland, Powell. The Quality Control Circle: An Analysis. Singapore: Published in collaboration with the Asian Productivity Organization, Tokyo, by New York, McGraw-Hill Far Eastern Publishers, 1971.

Niland, Powell. The Quality Control Circle: An Analysis. Singapore: Published in collaboration with the Asian Productivity Organization, Tokyo, by New York, McGraw-Hill Far Eastern Publishers, 1971.