Kaiser, R. (1993). The scent of orchids. Elsevier.
Cita Chicago (17th ed.)Kaiser, Roman. The Scent of Orchids. Amsterdam: Elsevier, 1993.
Cita MLA (9th ed.)Kaiser, Roman. The Scent of Orchids. Elsevier, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.