ISBNs beginnend mit 978-1-319-xxxxx-xBetsey Stevenson × Principles of Microeconomics Betsey StevensonMacmillan LearningSoftcover2019 Principles of Macroeconomics Betsey StevensonMacmillan LearningSoftcover2020 Principles of Economics Betsey StevensonMacmillan LearningHardcover2020
