Sources
1. Science.ca Profile : Walter Lewis. (n.d.). Retrieved March 21, 2015, from http://www.science.ca/scientists/scientistprofile.php?pID=13&pg=0
2. Department of Biology. (n.d.). Retrieved March 21, 2015, from
https://wubio.wustl.edu/lewis
3. Ethnobotany. (n.d.). Retrieved March 21, 2015, from http://www.accessexcellence.org/RC/Ethnobotany/page2.php
4. Drs. Memory Lewis and Walter Lewis. (n.d.). Retrieved March 21, 2015, from
http://graduation.ubc.ca/event/honorary-degrees/2012-honorary-degree-recipients/drs-memory-lewis-and-walter-lewis/
2. Department of Biology. (n.d.). Retrieved March 21, 2015, from
https://wubio.wustl.edu/lewis
3. Ethnobotany. (n.d.). Retrieved March 21, 2015, from http://www.accessexcellence.org/RC/Ethnobotany/page2.php
4. Drs. Memory Lewis and Walter Lewis. (n.d.). Retrieved March 21, 2015, from
http://graduation.ubc.ca/event/honorary-degrees/2012-honorary-degree-recipients/drs-memory-lewis-and-walter-lewis/