APA (7th ed.) Zitazioa
Sturm, J., & Wollmershuser, T. (2005). Ifo Survey Data in Business Cycle and Monetary Policy Analysis. Physica-Verlag HD. https://doi.org/10.1007/b138140
Chicago Style (17th ed.) Zitazioa
Sturm, Jan-Egbert, eta Timo Wollmershuser. Ifo Survey Data in Business Cycle and Monetary Policy Analysis. Heidelberg: Physica-Verlag HD, 2005. https://doi.org/10.1007/b138140.
MLA (9th ed.) Zitazioa
Sturm, Jan-Egbert, eta Timo Wollmershuser. Ifo Survey Data in Business Cycle and Monetary Policy Analysis. Physica-Verlag HD, 2005. https://doi.org/10.1007/b138140.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.