APA-čujuhus (7. p.)
Higgins, J. P. (1935). The Mexican Problem Statesmanship not Intervention.
Chicago-čujuhus (17. p.)
Higgins, John P. The Mexican Problem Statesmanship Not Intervention. 1935.
MLA-čujuhus (9. p.)
Higgins, John P. The Mexican Problem Statesmanship Not Intervention. 1935.
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