| Zeylanica, Vol 6, No 2, May 2001 | Rohan | Pethiyagoda | 2001 | General |
| Zillij | Amenna | Hussein | 2003 | Literature |
| Zoo Search in Ceylon | Heinz | Randow | 1958 | General |
| Zoological Guide to the Zoological Gardens of Ceylon | Aubrey N, Major | Weinman | 1957 | General |
| Zoological Guide to the Zoological Gardens of Ceylon (Dehiwela Zoo) | Aubrey N., Major | Weinman | 1961 | General |
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