Cita APA (7a ed.)
Haggblade, B., & Oliverio, M. E. Century 21 shorthand. South-Western Pub. Co..
Cita Chicago Style (17a ed.)
Haggblade, Berle, y Mary Ellen Oliverio. Century 21 Shorthand. Cincinnati: South-Western Pub. Co..
Cita MLA (9a ed.)
Haggblade, Berle, y Mary Ellen Oliverio. Century 21 Shorthand. South-Western Pub. Co..
Precaución: Estas citas no son 100% exactas.