Quirk et al. 1985

Quirk, Randolph and Greenbaum, Sidney and Leech, Geoffrey and Svartvik, Jan. 1985. A comprehensive grammar of the English language. London—New York: Longman.

@book{kortmannadverbial-QuirkGreenbaumLeechSvartvik1985,
  address   = {London—New York},
  author    = {Quirk, Randolph and Greenbaum, Sidney and Leech, Geoffrey and Svartvik, Jan},
  publisher = {Longman},
  title     = {A comprehensive grammar of the English language},
  year      = {1985}
}