Cruz, Zenaida Lansangan Principles and ethics of tour guiding / Zenaida Lansangan-Cruz. - Updated edition. - Manila : Rex Book Store, 2008 - vii, 164 pages : illustrations ; 22 cm . Includes bibliographical references and index ISBN: 9789712351006 (NP) Subjects--Topical Terms: Tour guides (Persons)--Vocational guidance. LC Class. No.: G 154.7 .C78 2008