APA (7e ed.) Bronvermelding

Castro, R. (1980). "This is my life": Once a teacher, always a teacher. M. & L Licudine Enterprises.

Chicago (17e ed.) Bronvermelding

Castro, Ricardo. "This Is My Life": Once a Teacher, Always a Teacher. Quirino Ave.,[Manila]: M. & L Licudine Enterprises, 1980.

MLA (9e ed.) Bronvermelding

Castro, Ricardo. "This Is My Life": Once a Teacher, Always a Teacher. M. & L Licudine Enterprises, 1980.