(1967). An introduction to social research (2-nd ed.). Appleton-century - crofts.
Чикаго маягийн жагсаалтAn Introduction to Social Research. 2-nd ed. New York: Appleton-century - crofts, 1967.
MLA ишлэлAn Introduction to Social Research. 2-nd ed. Appleton-century - crofts, 1967.
Warning: These citations may not always be 100% accurate.