From code-switching to borrowing :
foreign and diglossic mixing in Moroccan Arabic /
Jeffrey Heath.

APA Citation

Heath, J. (1989). From code-switching to borrowing: foreign and diglossic mixing in Moroccan Arabic. London: Kegan Paul International.

MLA Citation

Heath, Jeffrey. From Code-switching to Borrowing: Foreign And Diglossic Mixing In Moroccan Arabic. London: Kegan Paul International, 1989.

Warning: These citations may not always be complete (especially for serials).