Poplar, Vitta, author
Andrews McMeel Publishing, 2001
Buku Teks
Sorrell, Katherine, author
Chronicle Books, 2000
Buku Teks
A Ward Lock Book, 1997
Buku Referensi
Pakpahan, Donna Irma Rumondang, author
2019
UI - Skripsi (Membership)
A Ward Lock Book, 1997
Buku Referensi