APA (7th ed.) Citation

Alger, H., Jr. Adventures of a Telegraph Boy; or, "Number 91".

Chicago Style (17th ed.) Citation

Alger, Horatio, Jr. Adventures of a Telegraph Boy; or, "Number 91".

MLA (9th ed.) Citation

Alger, Horatio, Jr. Adventures of a Telegraph Boy; or, "Number 91".

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