Cita APA (7th ed.)

Christopherson, P. (1975). An advance English Grammer. Macmillan.

Cita Chicago (17th ed.)

Christopherson, P. An Advance English Grammer. London: Macmillan, 1975.

Cita MLA (9th ed.)

Christopherson, P. An Advance English Grammer. Macmillan, 1975.