Παραπομπή APA

Gritt, B. (1975). Facing the future Blk 4 part 2 units 15-16 P 853 15-16 Blk4 Part2. Open University Press.

Παραπομπή Chicago Style

Gritt, Brain. Facing the Future Blk 4 Part 2 Units 15-16 P 853 15-16 Blk4 Part2. England: Open University Press, 1975.

Παραπομπή MLA

Gritt, Brain. Facing the Future Blk 4 Part 2 Units 15-16 P 853 15-16 Blk4 Part2. Open University Press, 1975.