Type the full name of the act in the main reference list including the year.
Type a "§" then the section number for the information you are referencing followed by a comma. There are eight sections to the original Sherman Anti-Trust Act. Each section is approximately one paragraph long. If citing multiple sections include sequential numbers by using a dash between the two and non-sequential numbers by using an ampersand or comma.
Include the section number of the US Code book the act was found reproduced in if applicable. This portion of the citation will resemble this: 21 U.S.C. § 5462.
Type the year in parentheses and close out this portion of the citation with a period.
Reference the act in-text by placing the name of the act followed by a comma then the year in the body of the paper. Close the citation with a period. The citation will look like this: (Sherman Anti-Trust Act, 1890). Alternatively the act may be cited directly in the sentence in this manner: "According to the Sherman Anti-Trust Act of 1890."