Cita APA (7a ed.)

George, K. O., & Tilley, D. (2002). Swimming upstream: Middle school poems. Houghton Mifflin Harcourt.

Cita Chicago Style (17a ed.)

George, Kristine O'Connell, y Debbie Tilley. Swimming Upstream: Middle School Poems. Boston: Houghton Mifflin Harcourt, 2002.

Cita MLA (8a ed.)

George, Kristine O'Connell, y Debbie Tilley. Swimming Upstream: Middle School Poems. Houghton Mifflin Harcourt, 2002.

Precaución: Estas citas no son 100% exactas.