APA (7th ed.) Citation

Christophersen, P., & Sandved, A. O. (1977). An advanced english grammar. Macmillan Education.

Chicago Style (17th ed.) Citation

Christophersen, Paul, and Arthur O. Sandved. An Advanced English Grammar. Londres: Macmillan Education, 1977.

MLA (9th ed.) Citation

Christophersen, Paul, and Arthur O. Sandved. An Advanced English Grammar. Macmillan Education, 1977.