List of scholarly documents and pages with material on
Bukiyip (ape):
URL
Authors (if known)
Title (if known)
http://wings.buffalo.edu/linguistics/people/faculty/dryer/dryer/DryerClausetypes...
Dryer, Matthew S.
Clause Types
http://linguistics.buffalo.edu/people/faculty/dryer/dryer/DryerShopenClauseTypes...
Matthew S. Dryer
Clause Types