ebrary, Inc, Butler, R., & Russell, R. A. (2010). Giants of tourism. CABI.
Chicago-čujuhus (17. p.)ebrary, Inc, Richard Butler, juo Roslyn A. Russell. Giants of Tourism. Wallingford, Oxfordshire ; Cambridge, MA: CABI, 2010.
MLA-čujuhus (9. p.)ebrary, Inc, et al. Giants of Tourism. CABI, 2010.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.