Παραπομπή σε μορφή APA (7η εκδ.)

American Sunday-School Union & A. E. P. (1859). The land of mystery: Or, Scenes and incidents in Central Africa. American Sunday-School Union.

Παραπομπή σε μορφή Chicago (17η εκδ.)

American Sunday-School Union και A. E. P. The Land of Mystery: Or, Scenes and Incidents in Central Africa. Philadelphia: American Sunday-School Union, 1859.

Παραπομπή σε μορφή MLA (8th εκδ.)

American Sunday-School Union και A. E. P. The Land of Mystery: Or, Scenes and Incidents in Central Africa. American Sunday-School Union, 1859.