APA (7th ed.) Zitazioa
KUIPERS, S., & ZWART, W. D. (2000). TRENDS AND PATTERNS IN ILLICIT DRUG USE AMONG STUDENTS AGED 12 TO 18 IN THE NETHERLANDS.
Chicago Style (17th ed.) Zitazioa
KUIPERS, S.B, eta W.M. DE ZWART. TRENDS AND PATTERNS IN ILLICIT DRUG USE AMONG STUDENTS AGED 12 TO 18 IN THE NETHERLANDS. 2000.
MLA (9th ed.) Zitazioa
KUIPERS, S.B, eta W.M. DE ZWART. TRENDS AND PATTERNS IN ILLICIT DRUG USE AMONG STUDENTS AGED 12 TO 18 IN THE NETHERLANDS. 2000.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.