American Express. (1940). Manila and the Philippines (1940 ed.). American Express.
芝加哥风格引文American Express. Manila and the Philippines. 1940 ed. [Manila]: American Express, 1940.
MLA引文American Express. Manila and the Philippines. 1940 ed. American Express, 1940.
警告：这些引文格式不一定是100％准确.