The Hows of Why and the Why's of How
- Investigation of an instance of how-why alternation where how is construed as causal rather than manner.
- http://www.usc.edu/dept/LAS/ealc/chinling/articles/tsai16.pdf

References for Questions Seminar
- A list of references on the semantics of questions compiled by Maribel Romero.
- http://www.ling.upenn.edu/~sanguesa/653refs99.html