APA (7th ed.) Citation

Sherman, R. An astronomical diary, or, An almanack for the year of our Lord Christ, 1750: ... Calculated for the meridian of Boston, in New-England, lat. 42 deg. 25 min. north and about 4 hours, & 40 min. west from the meridian of London.

Chicago Style (17th ed.) Citation

Sherman, Roger. An Astronomical Diary, or, An Almanack for the Year of Our Lord Christ, 1750: ... Calculated for the Meridian of Boston, in New-England, Lat. 42 Deg. 25 Min. North and About 4 Hours, & 40 Min. West from the Meridian of London.

MLA (9th ed.) Citation

Sherman, Roger. An Astronomical Diary, or, An Almanack for the Year of Our Lord Christ, 1750: ... Calculated for the Meridian of Boston, in New-England, Lat. 42 Deg. 25 Min. North and About 4 Hours, & 40 Min. West from the Meridian of London.