Flynn, Nancy
The ePolicy handbook: desingning and implementing effective e-mail, internet and software policies/ Nancy Flynn
AMACOM, 2001
 Buku Referensi
Peek, Jerry D.
MH and XMH : e-mail for users and programmers
O`Reilly and Associates, 1992
 Buku Teks SO
Kajian kesantunan dalam e-mail permohonan yang ditulis oleh penutur Jepang dan pembelajar Indonesia
 Artikel Jurnal
Flynn, Nancy
The e-policy handbook: rules and best practices to safely manage your company's e-mail, blogs, social networking, and other electronic communication tools
American Management Association, 2009
 eBooks
Maria Malakalamere
Analisis pengaruh permission e-mail marketing terhadap brand image dan perilaku konsumen Starbucks Indonesia = Effect of permission e-mail marketing on brand image and consumer behavior Starbucks Indonesia / Maria Malakalamere
2017
 UI - Tesis Membership