Harrison, P. (1983). Seabirds, an identification guide. Croom Helm Reed.
Chicago Style (17th ed.) CitationHarrison, P. Seabirds, an Identification Guide. Beckenham, Kent Frenchs Forest, N.S.W: Croom Helm Reed, 1983.
MLA (9th ed.) CitationHarrison, P. Seabirds, an Identification Guide. Croom Helm Reed, 1983.
Warning: These citations may not always be 100% accurate.