There are no other published dictionaries of the language of Tongareva (Penrhyn) other than Shibata, Norio (ed.) 2003. Penrhyn-English Dictionary, the source of this online version. However, the following book will be useful:
Te Rangi Hiroa (P.H. Buck). 1032.Ethnology of Tongareva. Bernice P. Bishop Museum Bulletin 92. Honolulu: Bishop Museum.