Colfer, Eoin, autho
Artemis fowl and the lost colony = Koloni yang hilang
Gramedia Pustaka Utama, 2018
 Buku Teks SO
Davis, Patricia
Aromatherapy an A-Z
The C.W. Daniel Company Limited, 1988
 Buku Referensi
Heller, Sharon
Freud: A to Z
John Wiley & Sons, 2005
 Buku Teks SO
Heller, Sharon
Freud a to z
ohn Wiley & Sons, 2005
 Buku Teks
Ouchi, William G
Theory Z
Addison-Wsley, 1981
 Buku Teks