McHatton, R. J., & Oliveira Santos, M. C. (1990). Telemarketing total (1a. ed.). McGraw-Hill.
Tohutoru Kātū Chicago (17th ed.)McHatton, Robert J., me Maria Claudia Oliveira Santos. Telemarketing Total. 1a. ed. Sao Paulo: McGraw-Hill, 1990.
Tohutoro MLA (9th ed.)McHatton, Robert J., me Maria Claudia Oliveira Santos. Telemarketing Total. 1a. ed. McGraw-Hill, 1990.
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