Cita APA (7a ed.)

O'Reilly, R. M. Letter, To: "Dear Siss" (Mary O'Reilly) From: Robert, [1899?].

Cita Chicago Style (17a ed.)

O'Reilly, Robert M. Letter, To: "Dear Siss" (Mary O'Reilly) From: Robert, [1899?].

Cita MLA (8a ed.)

O'Reilly, Robert M. Letter, To: "Dear Siss" (Mary O'Reilly) From: Robert, [1899?].