APA-ийн эшлэл(7 дахь хэвлэлт)

Organisation for Economic Co-operation and Development & ProQuest (Firm). (2008). Making life easy for citizens and businesses in Portugal: Administrative simplification and e-government. OECD.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Organisation for Economic Co-operation and Development ба ProQuest (Firm). Making Life Easy for Citizens and Businesses in Portugal: Administrative Simplification and E-government. Paris: OECD, 2008.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Organisation for Economic Co-operation and Development ба ProQuest (Firm). Making Life Easy for Citizens and Businesses in Portugal: Administrative Simplification and E-government. OECD, 2008.