Alfonso, O. E. S., Rieza, C. H. S., & Alampay, R. B. A. The product life cycle theory and tourism in the Philippines: Case studies of Pagsanjan and Baguio City.
Citazione stile Chigago Style (17a edizione)Alfonso, Oscar Emel S., Carmela Helene S. Rieza, e Ramon Benedicto A. Alampay. The Product Life Cycle Theory and Tourism in the Philippines: Case Studies of Pagsanjan and Baguio City.
Citatione MLA (9a ed.)Alfonso, Oscar Emel S., et al. The Product Life Cycle Theory and Tourism in the Philippines: Case Studies of Pagsanjan and Baguio City.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.