Harrower, H. R. (1921). Essays on the internal secretions, 1920: Comprising the winning contributions, with some others, to the first "Harrower prize essay contest.". The Harrower Laboratory.
Lua i Stíl Chicago (17ú heag.)Harrower, Henry R. Essays on the Internal Secretions, 1920: Comprising the Winning Contributions, with Some Others, to the First "Harrower Prize Essay Contest.". Glendale, Calif.: The Harrower Laboratory, 1921.
Lua MLA (8ú heag.)Harrower, Henry R. Essays on the Internal Secretions, 1920: Comprising the Winning Contributions, with Some Others, to the First "Harrower Prize Essay Contest.". The Harrower Laboratory, 1921.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.