BAUGH L SUE. (1998). HOW TO RIGHT FIRST CLASS LETTER. VIVA BOOKS.
Cita Chicago Style (17a ed.)BAUGH L SUE. HOW TO RIGHT FIRST CLASS LETTER. VIVA BOOKS, 1998.
Cita MLA (9a ed.)BAUGH L SUE. HOW TO RIGHT FIRST CLASS LETTER. VIVA BOOKS, 1998.
Precaución: Estas citas no son 100% exactas.