Boeckh, Katrin (2014). «Allies Are Forever (Until They Are No More): Yugoslavia's Multivectoral Foreign Policy During Titoism». In: Keil; Stahl. The Foreign Policies of Post-Yugoslav States. Col: New Perspectives on South-East Europe. London: Palgrave Macmillan. pp. 18–43. ISBN978-1-137-38412-6. doi:10.1057/9781137384133_2
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Boeckh, Katrin (2014). «Allies Are Forever (Until They Are No More): Yugoslavia's Multivectoral Foreign Policy During Titoism». In: Keil; Stahl. The Foreign Policies of Post-Yugoslav States. Col: New Perspectives on South-East Europe. London: Palgrave Macmillan. pp. 18–43. ISBN978-1-137-38412-6. doi:10.1057/9781137384133_2