APA-ийн эшлэл(7 дахь хэвлэлт)

ebrary, Inc, & Hillary, R. (2000). Small and medium-sized enterprises and the environment: Business imperatives. Greenleaf Pub..

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

ebrary, Inc, ба Ruth Hillary. Small and Medium-sized Enterprises and the Environment: Business Imperatives. Sheffield: Greenleaf Pub., 2000.

MLA -ийн эшлэл (9 дэх хэвлэлт)

ebrary, Inc, ба Ruth Hillary. Small and Medium-sized Enterprises and the Environment: Business Imperatives. Greenleaf Pub., 2000.