Valencia, L. B. (2001). Hubs and spokes tourism strategy. Manila Bulletin.
芝加哥风格引文Valencia, Lynda B. "Hubs and Spokes Tourism Strategy." Manila Bulletin 2001.
MLA引文Valencia, Lynda B. "Hubs and Spokes Tourism Strategy." Manila Bulletin, 2001.
警告：这些引文格式不一定是100％准确.