APA引文

Philippines. (1921). Internal Revenue Laws of The Philippine Islands In Force and Effect July 1, 1921. WEL Collection.

芝加哥风格引文

Philippines. Internal Revenue Laws of The Philippine Islands In Force and Effect July 1, 1921. [S.l.]: WEL Collection, 1921.

MLA引文

Philippines. Internal Revenue Laws of The Philippine Islands In Force and Effect July 1, 1921. WEL Collection, 1921.

警告：这些引文格式不一定是100％准确.