Cita APA (7a ed.)
Morris, H., & Gallacher, L. ITIL Foundation Exam Study Guide. Sybex ; Wiley.
Cita estilo Chicago (17a ed.)
Morris, Helen, y Liz Gallacher. ITIL Foundation Exam Study Guide. Hoboken, EUA : Chichester, Inglaterra: Sybex ; Wiley.
Cita MLA (9a ed.)
Morris, Helen, y Liz Gallacher. ITIL Foundation Exam Study Guide. Sybex ; Wiley.
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