APA (7th ed.) Zitazioa
KOVAL, J., & PEDERSON, L. STRESS-COPING AND OTHER PSYCHOSOCIAL RISK FACTORS: A MODEL FOR SMOKING IN GRADE 6 STUDENTS.
Chicago Style (17th ed.) Zitazioa
KOVAL, J.J, eta L.L PEDERSON. STRESS-COPING AND OTHER PSYCHOSOCIAL RISK FACTORS: A MODEL FOR SMOKING IN GRADE 6 STUDENTS.
MLA (9th ed.) Zitazioa
KOVAL, J.J, eta L.L PEDERSON. STRESS-COPING AND OTHER PSYCHOSOCIAL RISK FACTORS: A MODEL FOR SMOKING IN GRADE 6 STUDENTS.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.