Tohutoro APA (7th ed.)
Spiegelglas, S., & Welsh, C. J. (1970). Economic development: Challenge and promise. Prentice-Hall.
Tohutoru Kātū Chicago (17th ed.)
Spiegelglas, Stephen, me Charles J. Welsh. Economic Development: Challenge and Promise. Englewood Cliffs, N.J.: Prentice-Hall, 1970.
Tohutoro MLA (9th ed.)
Spiegelglas, Stephen, me Charles J. Welsh. Economic Development: Challenge and Promise. Prentice-Hall, 1970.
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