Durell, C. V. (1964). Key to elementary coordinate geometry. G Bell and Sons.
Chicago Edition CitationDurell, C. V. Key to Elementary Coordinate Geometry. London: G Bell and Sons, 1964.
MLA Edition CitationDurell, C. V. Key to Elementary Coordinate Geometry. G Bell and Sons, 1964.
Warning: These citations may not always be 100% accurate.