Lua APA (7ú heag.)

JOHNSTON ROBERT. (2008). SERVICE OPERASTIONS MANAGEMENT (2ND ED.). PEARSON EDUCATION.

Lua i Stíl Chicago (17ú heag.)

JOHNSTON ROBERT. SERVICE OPERASTIONS MANAGEMENT. 2ND ED. INDIA: PEARSON EDUCATION, 2008.

Lua MLA (9ú heag.)

JOHNSTON ROBERT. SERVICE OPERASTIONS MANAGEMENT. 2ND ED. PEARSON EDUCATION, 2008.

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