Alba, J. J. J., Fernandez, H. R., & Espina, M. A. A. (1996). Building guidelines for ecotourism in the Philippines: Foreign Retiree's Village Complex.
Chicago-viite (17. p.)Alba, Joseph Jr. J., Honrado R. Fernandez, ja Mary Ann A. Espina. Building Guidelines for Ecotourism in the Philippines: Foreign Retiree's Village Complex. 1996.
MLA-viite (9. p.)Alba, Joseph Jr. J., et al. Building Guidelines for Ecotourism in the Philippines: Foreign Retiree's Village Complex. 1996.
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