Bonnycastle, J., & Joly, J. R. (1816). An introduction to astronomy: In a series of letters, from a preceptor to his pupil .. (7th ed. corrected and greatly improved.). J. Nunn.

Bonnycastle, John, and Jaspar Robert Joly. An Introduction to Astronomy: In a Series of Letters, from a Preceptor to His Pupil .. 7th ed. corrected and greatly improved. J. Nunn, 1816.