Keith, G. P. (1967). Project study on development and promotion of Ambuklao and Binga hydroelectric plant sites as tourist spots. Mountain Province Development Authority.
Citazione stile Chigago Style (17a edizione)Keith, Gabriel Pawid. Project Study on Development and Promotion of Ambuklao and Binga Hydroelectric Plant Sites as Tourist Spots. Baguio City: Mountain Province Development Authority, 1967.
Citatione MLA (9a ed.)Keith, Gabriel Pawid. Project Study on Development and Promotion of Ambuklao and Binga Hydroelectric Plant Sites as Tourist Spots. Mountain Province Development Authority, 1967.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.