APA aipamena

(1998). Helping clients understand vaccination. Guelph [Ont.]: Lifelearn.

Chicago Style aipamena

Helping Clients Understand Vaccination. Guelph [Ont.]: Lifelearn, 1998.

MLA aipamena

Helping Clients Understand Vaccination. Guelph [Ont.]: Lifelearn, 1998.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.