Shackley, M. L. (1998). Visitor management: Case studies from World Heritage sites. Butterworth Heinemann.
Cita Chicago (17th ed.)Shackley, Myra L. Visitor Management: Case Studies from World Heritage Sites. Oxford: Butterworth Heinemann, 1998.
Cita MLA (9th ed.)Shackley, Myra L. Visitor Management: Case Studies from World Heritage Sites. Butterworth Heinemann, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.