Cita APA

Williams, J. G. 1., Williams, A. E., Arlott, N. 1., & Peterson, R. T. 1. (1978). A field guide to the orchids of Britain and Europe with North Africa and the Middle East. London: Collins.

Citación estilo Chicago

Williams, John George 1913-1997, Andrew E. Williams, Norman 1947-2022 Arlott, y Roger Tory 1908-1996 Peterson. A Field Guide to the Orchids of Britain and Europe With North Africa and the Middle East. London: Collins, 1978.

Cita MLA

Williams, John George 1913-1997, Andrew E. Williams, Norman 1947-2022 Arlott, y Roger Tory 1908-1996 Peterson. A Field Guide to the Orchids of Britain and Europe With North Africa and the Middle East. London: Collins, 1978.