Westerback, M., & Yukawa, M. (1980). Using Government Documents to Obtain Information on National Parks, Monuments and Forests.
Citazione stile Chigago Style (17a edizione)Westerback, Mary, e Masako Yukawa. Using Government Documents to Obtain Information on National Parks, Monuments and Forests. 1980.
Citatione MLA (9a ed.)Westerback, Mary, e Masako Yukawa. Using Government Documents to Obtain Information on National Parks, Monuments and Forests. 1980.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.