Gaya APA

O'Quinn, K. (2006). Perfect Phrases for Business Letters: Hundreds of Ready to use phrases for writing effectively Business Letter. Memos. e-mail. and more (-). New York: Mc-Graw-Hill.

Gaya MLA

O'Quinn, Ken. "Perfect Phrases for Business Letters: Hundreds of Ready to use phrases for writing effectively Business Letter. Memos. e-mail. and more". - New York: Mc-Graw-Hill, 2006. Text.