Gaya APA

Heny, F., Richards, B. (1982). Linguistic Categories: Auxiliaries and Related Puzzles, Volume One: Categories . Boston: D. Reidel Publishing Company.

Gaya MLA

Heny, Frank., Richards, Barry. "Linguistic Categories: Auxiliaries and Related Puzzles, Volume One: Categories". Boston: D. Reidel Publishing Company, 1982. Buku Teks.