Conway, E. 50 Economics Ideas You Really Need to Know. Quercus.
Chicago-viite (17. p.)Conway, Edmund. 50 Economics Ideas You Really Need to Know. Quercus.
MLA-viite (9. p.)Conway, Edmund. 50 Economics Ideas You Really Need to Know. Quercus.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.