APA
ANON/FIELD ORNITHOLOGY GROUP O, . (2004). Pictorial guide to the Birds of Srilanka. COLOMBO: ZOOLOGY DEPARTMENT, UNIVERSITY.
Chicago
ANON/FIELD ORNITHOLOGY GROUP O, . 2004. Pictorial guide to the Birds of Srilanka. COLOMBO: ZOOLOGY DEPARTMENT, UNIVERSITY.
Harvard
ANON/FIELD ORNITHOLOGY GROUP O, . (2004). Pictorial guide to the Birds of Srilanka. COLOMBO: ZOOLOGY DEPARTMENT, UNIVERSITY.
MLA
ANON/FIELD ORNITHOLOGY GROUP O, . Pictorial guide to the Birds of Srilanka. COLOMBO: ZOOLOGY DEPARTMENT, UNIVERSITY. 2004.