Cita APA (7a ed.)
Preston, D. R., & Shuy, R. W. (1976). Varieties of american english: Teacher's handbook. English language programs division.
Cita Chicago Style (17a ed.)
Preston, Dennis R., y Roger W. Shuy. Varieties of American English: Teacher's Handbook. Washington, D. C: English language programs division, 1976.
Cita MLA (9a ed.)
Preston, Dennis R., y Roger W. Shuy. Varieties of American English: Teacher's Handbook. English language programs division, 1976.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.