APA (7th ed.) Citation

Barter, A. R. (1970). Learning languages : the comparative method / by A.R. Barter: The comparative method. David and Charles.

Chicago Style (17th ed.) Citation

Barter, A. R. Learning Languages : The Comparative Method / by A.R. Barter: The Comparative Method. David and Charles, 1970.

MLA (9th ed.) Citation

Barter, A. R. Learning Languages : The Comparative Method / by A.R. Barter: The Comparative Method. David and Charles, 1970.

Warning: These citations may not always be 100% accurate.