24.
The correct way of citing references in a research paper would be :
A:
Berger, John, Into Their Labours (London: Granta, 1992).
B:
John Berger, Into Their Labours (London: Granta, 1992).
C:
John Berger’s Into Their Labours (Granta : London, 1992).
D:
Into Their Labours, by John Berger, London : Granta, 1992.
The answer is:
A