APA (7th ed.) Citation

Parker, G. Parker's ephemeris, for the year of our Lord 1781 (The ninety second impression.).

Chicago Style (17th ed.) Citation

Parker, George. Parker's Ephemeris, for the Year of Our Lord 1781. The ninety second impression.

MLA (9th ed.) Citation

Parker, George. Parker's Ephemeris, for the Year of Our Lord 1781. The ninety second impression.

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