APA (7th ed.) Citation

Snell, C. (1744). The standard rules of the round and round-text hands: Mathematically demonstrating how better alphabets of those hands may be performed, than have ever yet been published in Great-Britain. Absolutely Necessary to be Known by all Writing-Masters, and others, who would gain a Perfect Knowledge of those Hands; and very Useful for Engravers, Painters, Masons, &c. who may have Occasion to Draw Large Inscriptions. Invented by Charles Snell, late Writing-Master and Accomptant. printed for, and sold by Henry Overton, at the White-Horse, without Newgate.

Chicago Style (17th ed.) Citation

Snell, Charles. The Standard Rules of the Round and Round-text Hands: Mathematically Demonstrating How Better Alphabets of Those Hands May Be Performed, than Have Ever yet Been Published in Great-Britain. Absolutely Necessary to Be Known by All Writing-Masters, and Others, Who Would Gain a Perfect Knowledge of Those Hands; and Very Useful for Engravers, Painters, Masons, &c. Who May Have Occasion to Draw Large Inscriptions. Invented by Charles Snell, Late Writing-Master and Accomptant. London: printed for, and sold by Henry Overton, at the White-Horse, without Newgate, 1744.

MLA (9th ed.) Citation

Snell, Charles. The Standard Rules of the Round and Round-text Hands: Mathematically Demonstrating How Better Alphabets of Those Hands May Be Performed, than Have Ever yet Been Published in Great-Britain. Absolutely Necessary to Be Known by All Writing-Masters, and Others, Who Would Gain a Perfect Knowledge of Those Hands; and Very Useful for Engravers, Painters, Masons, &c. Who May Have Occasion to Draw Large Inscriptions. Invented by Charles Snell, Late Writing-Master and Accomptant. printed for, and sold by Henry Overton, at the White-Horse, without Newgate, 1744.

Warning: These citations may not always be 100% accurate.