References for Sunday Iyahen
- N O Omozusi, The Benin Kingdom: A Century After British Invasion (Mufti International Services, 1 January 1997).
- Demise of Senator Professor Sunday Osarumwense Iyahen, The Senate, Federal Republic of Nigeria, 8th National Assembly, Third Session No 62 (13 February 2018).
- Senate passes motions on demise of Prof. Iyahen, Federal Republic of Nigeria, National Assembly (14 February 2018).
- Senator Professor Sunday Osarumwense Iyahen Memorial.
- Tribute : Senator Professor Sunday Osarumwense Iyahen Memorial.
- S W Williams, Sunday Osarumwense Iyahen, Mathematicians of the African Diaspora, The Mathematics Department, State University of New York at Buffalo (2008).