It's just dawned on me that there seems to be no single place where a would-be reader can find the titles of all the major published literature relating to the Nikumaroro Hypothesis, so I'd better provide one. Here are the major sources with links to help you find them:
Amelia Earhart's Shoes. Thomas F. King, Randall Jacobson, Karen Burns, Kenton Spading. Rowman & Littlefield 2001, updated and improved edition 2004, https://rowman.com/ISBN/9780759101319/Amelia-Earhart's-Shoes-Is-the-Mystery-Solved?
Finding Amelia. Ric Gillespie. Naval Institute Press 2009, http://www.amazon.com/Finding-Amelia-Story-Earhart-Disappearance/dp/1591143187
Amelia Earhart on Nikumaroro: a Summary of the Evidence. Thomas F. King in Pacific Studies 35:3, 2012: https://ojs.lib.byu.edu/spc/index.php/PacificStudies/article/view/32843
And of course, the TIGHAR website for a plethora of original documents, research reports, and updates on the ongoing research. TIGHAR.org.