APA aipamena

Kotler, P., & Bloom, P. N. (1984). Marketing professional services. Prentice-Hall.

Chicago Style aipamena

Kotler, Philip, and Paul N. Bloom. Marketing Professional Services. Englewood Cliffs, NJ: Prentice-Hall, 1984.

MLA aipamena

Kotler, Philip, and Paul N. Bloom. Marketing Professional Services. Prentice-Hall, 1984.