Cita APA (7a ed.)

Porley, R. (2008). Arable bryophytes: A field guide to the mosses, liverworts and hornworts of cultivated land in Britain and Ireland. Wild Guides.

Cita Chicago Style (17a ed.)

Porley, Ron. Arable Bryophytes: A Field Guide to the Mosses, Liverworts and Hornworts of Cultivated Land in Britain and Ireland. Old Basing (Hampshire): Wild Guides, 2008.

Cita MLA (9a ed.)

Porley, Ron. Arable Bryophytes: A Field Guide to the Mosses, Liverworts and Hornworts of Cultivated Land in Britain and Ireland. Wild Guides, 2008.