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.
Chicago Style (17. basım) AtıfValdez, Leonardo Santos. Vocational Preferences of the Senior High School Students of Filipinas National High School, San Nicolas, Ilocos Norte School Year, 1987-1988. 1988.
MLA (9th ed.) AtıfValdez, Leonardo Santos. Vocational Preferences of the Senior High School Students of Filipinas National High School, San Nicolas, Ilocos Norte School Year, 1987-1988. 1988.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..