Cita APA

Harrap, A., & Harrap, S. 1. (2009). Orchids of Britain and Ireland: A field guide and site guide (Second edition.). London: A & C Black.

Citación estilo Chicago

Harrap, Anne, y Simon 1959- Harrap. Orchids of Britain and Ireland: A Field Guide and Site Guide. Second edition. London: A & C Black, 2009.

Cita MLA

Harrap, Anne, y Simon 1959- Harrap. Orchids of Britain and Ireland: A Field Guide and Site Guide. Second edition. London: A & C Black, 2009.