If you can't find them in your local nursery, or would prefer to buy online, try
National Tropical Plants
Advanced specimens grown especially for upmarket landscaping works, might not be available to the general public and you may have to talk to a landscaper to obtain them.
More Links
Pandanus (
Pandanus tectorius) Wildlife Preservation Society of Queensland, Bayside Branch
Hala Pandanas tectorius (synonym P. odoratissimus). University of Hawai`i at Manoa (PDF)
Hala (
Pandanus tectorius). Kauai Community College, Hawaii
Pacific flora database of the National Tropical Botanical Garden, USA. Select Pandanus from the "Choose A Plant" menu
Pandanus tectorius Park. including notes on the uncertain taxonomy of this species. in: Agroforestry in the Pacific Islands: Systems for Sustainability, United Nations University Press. See also the
Appendix
Screw-Pine Pandanus utilis Online Manual of Subtropical Landscaping Plants, Palm Beach Community College, Florida