Cita APA (7a ed.)
Frank, M. Modern English Exercises for Non-Native Speakers: Part I : Parts of Speech. Prentice-Hall.
Cita estilo Chicago (17a ed.)
Frank, Marcella. Modern English Exercises for Non-Native Speakers: Part I : Parts of Speech. Englewood Cliffs, EUA: Prentice-Hall.
Cita MLA (9a ed.)
Frank, Marcella. Modern English Exercises for Non-Native Speakers: Part I : Parts of Speech. Prentice-Hall.
Precaución: Estas citas no son 100% exactas.