APA način citiranja

Zettler, L. (2015). The orchid recovery program at Illinois College – a successful blend of teaching, research and undergraduate student participation to benefit orchid conservation.

Čikaški stil citiranja

Zettler, Lawrence. The Orchid Recovery Program At Illinois College – a Successful Blend of Teaching, Research and Undergraduate Student Participation to Benefit Orchid Conservation. 2015.

MLA način citiranja

Zettler, Lawrence. The Orchid Recovery Program At Illinois College – a Successful Blend of Teaching, Research and Undergraduate Student Participation to Benefit Orchid Conservation. 2015.