Information Journal Paper
APA:
CopyFLAM, HARRY, & HELPMAN, ELHANAN. (1987). VERTICAL PRODUCT DIFFERENTIATION AND NORTH-SOUTH TRADE. AMERICAN ECONOMIC REVIEW, 77(5), 810-822. SID. https://sid.ir/paper/576345/en
Vancouver:
CopyFLAM HARRY, HELPMAN ELHANAN. VERTICAL PRODUCT DIFFERENTIATION AND NORTH-SOUTH TRADE. AMERICAN ECONOMIC REVIEW[Internet]. 1987;77(5):810-822. Available from: https://sid.ir/paper/576345/en
IEEE:
CopyHARRY FLAM, and ELHANAN HELPMAN, “VERTICAL PRODUCT DIFFERENTIATION AND NORTH-SOUTH TRADE,” AMERICAN ECONOMIC REVIEW, vol. 77, no. 5, pp. 810–822, 1987, [Online]. Available: https://sid.ir/paper/576345/en