APA-viite (7. p.)

DAVIDSON ELEANOR. (2004). FORMATTING LETTERS AND REPORTS: COMPUTER USER'S GUIDE. VIVA BOOKS PVT.LTD.

Chicago-viite (17. p.)

DAVIDSON ELEANOR. FORMATTING LETTERS AND REPORTS: COMPUTER USER'S GUIDE. NEW DELHI: VIVA BOOKS PVT.LTD, 2004.

MLA-viite (9. p.)

DAVIDSON ELEANOR. FORMATTING LETTERS AND REPORTS: COMPUTER USER'S GUIDE. VIVA BOOKS PVT.LTD, 2004.