Herrmann, H. (1959). Omphalos. Aschendorff.
I tāruatia paitia ki te papatopenga
Kua rahua te tārua ki te papatopenga
Tohutoru Kātū Chicago (17th ed.)
Herrmann, Hans-Volkmar. Omphalos. Münster Westf: Aschendorff, 1959.
I tāruatia paitia ki te papatopenga
Kua rahua te tārua ki te papatopenga
Tohutoro MLA (9th ed.)
Herrmann, Hans-Volkmar. Omphalos. Aschendorff, 1959.
I tāruatia paitia ki te papatopenga
Kua rahua te tārua ki te papatopenga
Kia tūpato: Kāore pea ēnei kupu hautoa i te ōrite pū 100%.