APA引文

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

Trích dẫn kiểu Chicago

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

MLA引文

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

警告：这些引文格式不一定是100％准确.