Cita APA

Sinker, C. A. 1., Packham, J. R. 1., Trueman, I. C., Oswald, P. H., & Perring, F. H. 1. (1991). Ecological flora of the Shropshire region. England: Shropshire Wildlife Trust.

Citación estilo Chicago

Sinker, Charles A. 1931-, John R. 1930- Packham, Ian C. Trueman, Philip H. Oswald, y Franklyn Hugh 1927-2003 Perring. Ecological Flora of the Shropshire Region. England: Shropshire Wildlife Trust, 1991.

Cita MLA

Sinker, Charles A. 1931-, et al. Ecological Flora of the Shropshire Region. England: Shropshire Wildlife Trust, 1991.