Pearson, D. (1989). The natural house. Octopus.
Cita Chicago (17th ed.)Pearson, David. The Natural House. London: Octopus, 1989.
Cita MLA (9th ed.)Pearson, David. The Natural House. Octopus, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.