Cita APA

Summerhayes, V. S. 1., & Atkinson, R. (1951). Wild orchids of Britain. London: Collins.

Citación estilo Chicago

Summerhayes, Victor Samuel 1897-1974, y Robert Atkinson. Wild Orchids of Britain. London: Collins, 1951.

Cita MLA

Summerhayes, Victor Samuel 1897-1974, y Robert Atkinson. Wild Orchids of Britain. London: Collins, 1951.