Guide Activity in Geotourism

GOELDNER, C. R., RITCHIE, J. R. B.: Tourism: Principles, Practices, Philosophies. 11th edition. Hoboken: John Willey a Sons, 2009, 624 s. ISBN
978-0-470-08459-5

BECK, L., CABLE, T.: Interpretation for the 21st Century: Fifteen Guiding Principles for Interpreting Nature and Culture. Champaign IL: Sagamore Publishing, 2002, 204 p. ISBN-13 978-1571675224