Original work

Fries, C. C., & Lado, R. (1958). English Pattern Practices: Establishing the Patterns as Habits. Ann Arbor: University of Michigan Press.

Lado, R. (1957) Linguistics across cultures. Applied Linguistics for Language Teachers. Ann Arbor: University of Michigan Press.

Secondary sources

Kramsch, C. (2007), Re-reading Robert Lado, 1957, Linguistics across Cultures. Applied linguistics for language teachers. International Journal of Applied Linguistics, 17: 241–247.

Woodsworth, J. (1965). An Analysis of the Audio-Lingual Approach as Applied to Methods of Teaching Russian PDF