Template:Alderwerelt, 1917
- Alderwerelt, C.R.W.K. 1916 publ. 1917. Malayan ferns and fern allies. Handbook to the determination of the ferns and fern allies of the Malayan Islands (incl. those of the Malay Peninsula, the Philippines and New Guinea). Supplement 1. Batavia (Landsdrukkerij). 577 & 73 pp. [Corrections, modifications and additions] Google Books (USA)