The Observer:
being a collection of moral, literary and familiar essays.

APA Citation

Cumberland, R., Aristophanes. (1799). The Observer: being a collection of moral, literary and familiar essays. The fifth ed., newly arranged. London: C. Dilly.

MLA Citation

Cumberland, Richard, 1732-1811, and Aristophanes. The Observer: Being a Collection of Moral, Literary And Familiar Essays. The fifth ed., newly arranged. London: C. Dilly, 1799.

Warning: These citations may not always be complete (especially for serials).