APA (7th ed.) Citation

(1920). Book-lice or psocids, annoying household pests. GPO.

Chicago Style (17th ed.) Citation

Book-lice or Psocids, Annoying Household Pests. [Washington]: GPO, 1920.

MLA (9th ed.) Citation

Book-lice or Psocids, Annoying Household Pests. GPO, 1920.

Warning: These citations may not always be 100% accurate.