I'd searched everywhere for a quick reference guide to the xAPI statements that are passed for each library. Having not been able to locate one, below is a collated list of the xAPI statements for the H5P Libraries that support xAPI.
T. Alrawashdeh, M. Muhairat, and S. Alqatawnah. International Journal of Computer Science, Engineering and Information Technology (IJCSEIT), 2 (2):
45-54(April 2012)
A. Janson, S. Ernst, K. Lehmann, and J. Leimeister. 4th Workshop on Awareness and Reflection in Technology-Enhanced Learning (ARTEL 2014) to be held in the context of EC-TEL 2014, Graz, Austria, (2014)
M. Chi, P. Jordan, K. VanLehn, and D. Litman. Proceeding of the 2009 conference on Artificial Intelligence in Education: Building Learning Systems that Care: From Knowledge Representation to Affective Modelling, page 197--204. Amsterdam, The Netherlands, The Netherlands, IOS Press, (2009)