Gaya APA
Betteridge, H, T. (1980).
Cassell's German - English, English - German / Harold T. Betteridge .
:
Mac Millan Publising.
Gaya MLA
Betteridge, Harold, T..
"Cassell's German - English, English - German / Harold T. Betteridge".
:
Mac Millan Publising,
1980.
Referensi.