Cita APA (7th ed.)
Pickard, R. (1996). Conservation in the built environment. Longman.
Cita Chicago (17th ed.)
Pickard, R.D. Conservation in the Built Environment. London: Longman, 1996.
Cita MLA (9th ed.)
Pickard, R.D. Conservation in the Built Environment. Longman, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.