May, D. H., & McAloney, R. (2005). Everyday letters for busy people: Hundreds of samples you can adapt a moment's notice: invitations and resignations, complaints and condolences e-mail and snail mail and more (Rev.ed.). Petaling Jaya, Selangor: Advantage Quest.

May, Debra Hart, and Regina McAloney. Everyday Letters for Busy People: Hundreds of Samples You Can Adapt a Moment's Notice: Invitations and Resignations, Complaints and Condolences E-mail and Snail Mail and More. Rev.ed. Petaling Jaya, Selangor: Advantage Quest, 2005.

May, Debra Hart, and Regina McAloney. Everyday Letters for Busy People: Hundreds of Samples You Can Adapt a Moment's Notice: Invitations and Resignations, Complaints and Condolences E-mail and Snail Mail and More. Rev.ed. Petaling Jaya, Selangor: Advantage Quest, 2005.