Title. (1969). Overview of plant mantnance approaches to control and reduce. National Research Council. Technical Information Service.
Chicago-viite (17. p.)Title. Overview of Plant Mantnance Approaches to Control and Reduce. Canada: National Research Council. Technical Information Service, 1969.
MLA-viite (9. p.)Title. Overview of Plant Mantnance Approaches to Control and Reduce. National Research Council. Technical Information Service, 1969.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.