APA (7th ed.) Citation

David Bolton, M. O., & Bué, c. D. R. a. E. (1993). Basic working grammar (1a ed.). Lisboa Editora.

Chicago Style (17th ed.) Citation

David Bolton, Mats Oscarson, and colab. Desmond Rome and Eduardo Bué. Basic Working Grammar. 1a ed. Lisboa Editora, 1993.

MLA (8th ed.) Citation

David Bolton, Mats Oscarson, and colab. Desmond Rome and Eduardo Bué. Basic Working Grammar. 1a ed. Lisboa Editora, 1993.

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