APA-čujuhus (7. p.)
ebrary, Inc, Buckley, R., & Font, X. (2001). Tourism ecolabelling: Certification and promotion of sustainable management. CABI Pub..
Chicago-čujuhus (17. p.)
ebrary, Inc, Ralf Buckley, juo Xavier Font. Tourism Ecolabelling: Certification and Promotion of Sustainable Management. Wallingford, Oxon ; New York: CABI Pub., 2001.
MLA-čujuhus (9. p.)
ebrary, Inc, et al. Tourism Ecolabelling: Certification and Promotion of Sustainable Management. CABI Pub., 2001.
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