Roser, N. L. (1987). Laidlaw spelling. Laidlaw Brothers.
Citación estilo ChicagoRoser, Nancy L. Laidlaw Spelling. Illinois: Laidlaw Brothers, 1987.
Cita MLARoser, Nancy L. Laidlaw Spelling. Laidlaw Brothers, 1987.
Warning: These citations may not always be 100% accurate.