APA-čujuhus (7. p.)
St. Clair, G. (1993). Customer service in the information environment. Bowker-Saur.
Chicago-čujuhus (17. p.)
St. Clair, Guy. Customer Service in the Information Environment. London ; New Jersey: Bowker-Saur, 1993.
MLA-čujuhus (9. p.)
St. Clair, Guy. Customer Service in the Information Environment. Bowker-Saur, 1993.
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