Wilmer (1970), p. 4. Wilmer, Val (1970). "S. E. Rogers' Life Story". In Rogers, S. E. (ed.). Sierra Leone Rogie International Song Book. Freetown: S.E. Rogers. pp. 3–15 – via Internet Archive.
Wilmer (1970), p. 8. Wilmer, Val (1970). "S. E. Rogers' Life Story". In Rogers, S. E. (ed.). Sierra Leone Rogie International Song Book. Freetown: S.E. Rogers. pp. 3–15 – via Internet Archive.
Siebert (2014), p. 163. Siebert, Daniel (2014). "Traditionen der world music" [Traditions in World Music]. Musik im Zeitalter der Globalisierung [Music in the Age of Globalization] (in German). Bielefeld: Transcript Verlag. pp. 143–192. ISBN9783837629057.
Stewart, Gary (2000). "S. E. Rogers "Rogie"". Sierra Leone Journal; Dispatches from Pre-War Freetown and Beyond. Sierra Leone Journal. Archived from the original on 23 May 2022. Retrieved 4 June 2023.
web.archive.org
Stewart, Gary (2000). "S. E. Rogers "Rogie"". Sierra Leone Journal; Dispatches from Pre-War Freetown and Beyond. Sierra Leone Journal. Archived from the original on 23 May 2022. Retrieved 4 June 2023.