(UNWTO), U. N. W. T. O. (2014). Top destinations. United Nation World Tourism Organization (UNWTO).
Chicago Style Citation(UNWTO), United Nation World Tourism Organization. Top Destinations. United Nation World Tourism Organization (UNWTO), 2014.
MLA引文(UNWTO), United Nation World Tourism Organization. Top Destinations. United Nation World Tourism Organization (UNWTO), 2014.
警告：這些引文格式不一定是100％准確.