Longitude made easy from the moon's altitude only. By William Garrard.

MLA

Garrard, William. Longitude made easy from the moon's altitude only. By William Garrard. London : printed for the author, by J. Moore, No. 43, Drury-Lane, M,DCC,LXXXVII. [1787]

APA

Garrard, W. (1787). Longitude made easy from the moon's altitude only. By William Garrard. London : printed for the author, by J. Moore, No. 43, Drury-Lane.

Chicago

Garrard, William. Longitude made easy from the moon's altitude only. By William Garrard. London : printed for the author, by J. Moore, No. 43, Drury-Lane, M,DCC,LXXXVII. [1787]