APA-viite (7. p.)
Harmon, E. R. (1974). His call: "Go ye" to - Nigeria. [publisher not identified].
Chicago-viite (17. p.)
Harmon, Ethel Rebecca. His Call: "Go Ye" to - Nigeria. Corbin: [publisher not identified], 1974.
MLA-viite (9. p.)
Harmon, Ethel Rebecca. His Call: "Go Ye" to - Nigeria. [publisher not identified], 1974.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.