APA引文

Kelly S Bricker. Sustainable tourism and the millenium development goals: Effecting positive change.

Chicago Edition Citation

Kelly S Bricker. Sustainable Tourism and the Millenium Development Goals: Effecting Positive Change.

MLA引文

Kelly S Bricker. Sustainable Tourism and the Millenium Development Goals: Effecting Positive Change.

警告：這些引文格式不一定是100％准確.