STOCKTON JOHN R. (1980). INTRODUCTION TO BUSINESS & ECONOMIC STATISTICS (6TH.). SOUTH-WESTERN COLLEGE PUBLISHING CO.
Lua i Stíl Chicago (17ú heag.)STOCKTON JOHN R. INTRODUCTION TO BUSINESS & ECONOMIC STATISTICS. 6TH. CINCINNATI: SOUTH-WESTERN COLLEGE PUBLISHING CO, 1980.
Lua MLA (9ú heag.)STOCKTON JOHN R. INTRODUCTION TO BUSINESS & ECONOMIC STATISTICS. 6TH. SOUTH-WESTERN COLLEGE PUBLISHING CO, 1980.
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