APA استشهاد

RIORDAN.John. (1964). AN INTRODUCTION TO COMBINATORIAL ANALYSIS. john wiley & sons.

استشهاد بنمط شيكاغو

RIORDAN.John. AN INTRODUCTION TO COMBINATORIAL ANALYSIS. canada: john wiley & sons, 1964.

MLA استشهاد

RIORDAN.John. AN INTRODUCTION TO COMBINATORIAL ANALYSIS. john wiley & sons, 1964.