APA-viite (7. p.)
ebrary, Inc, & Sheldon, C. (1997). ISO 14001 and beyond: Environmental management systems in the real world. Greenleaf Pub..
Chicago-viite (17. p.)
ebrary, Inc, ja Christopher Sheldon. ISO 14001 and Beyond: Environmental Management Systems in the Real World. Sheffield: Greenleaf Pub., 1997.
MLA-viite (9. p.)
ebrary, Inc, ja Christopher Sheldon. ISO 14001 and Beyond: Environmental Management Systems in the Real World. Greenleaf Pub., 1997.
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