APA-ийн эшлэл(7 дахь хэвлэлт)

EYBERS, G. v. F. (1969). Select constitutional documents illustrating South African history 1795 – 1910. George von Felfling Eybers.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

EYBERS, George von Felfling. Select Constitutional Documents Illustrating South African History 1795 – 1910. George von Felfling Eybers, 1969.

MLA -ийн эшлэл (9 дэх хэвлэлт)

EYBERS, George von Felfling. Select Constitutional Documents Illustrating South African History 1795 – 1910. George von Felfling Eybers, 1969.