APA

Bridson G. D. R., . (2004). BPH-2 : periodicals with botanical content / G. D. R. Bridson. Pittsburgh: Hunt Institute for Botanical Documentation.

Chicago

Bridson Gavin D R, . 2004. BPH-2 : periodicals with botanical content / G. D. R. Bridson. Pittsburgh: Hunt Institute for Botanical Documentation.

Harvard

Bridson G. D. R., . (2004). BPH-2 : periodicals with botanical content / G. D. R. Bridson. Pittsburgh: Hunt Institute for Botanical Documentation.

MLA

Bridson Gavin D R, . BPH-2 : periodicals with botanical content / G. D. R. Bridson. Pittsburgh: Hunt Institute for Botanical Documentation. 2004.