Valdez, L. S. (1988). Vocational preferences of the senior high school students of Filipinas National High School, San Nicolas, Ilocos Norte school year, 1987-1988.
Citazione stile Chigago Style (17a edizione)Valdez, Leonardo Santos. Vocational Preferences of the Senior High School Students of Filipinas National High School, San Nicolas, Ilocos Norte School Year, 1987-1988. 1988.
Citatione MLA (9a ed.)Valdez, Leonardo Santos. Vocational Preferences of the Senior High School Students of Filipinas National High School, San Nicolas, Ilocos Norte School Year, 1987-1988. 1988.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.