APA-čujuhus (7. p.)

LEFTWICH, R. H. (1969). Introduction to economic thinking. Holt.

Chicago-čujuhus (17. p.)

LEFTWICH, Richard H. Introduction to Economic Thinking. New York: Holt, 1969.

MLA-čujuhus (9. p.)

LEFTWICH, Richard H. Introduction to Economic Thinking. Holt, 1969.

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