APA (7th ed.) Citation

Heny, F., & Richards, B. (1983). Linguistic Categories: Auxiliaries and Related Puzzles: Volume One: Categories. Springer Netherlands.

Chicago Style (17th ed.) Citation

Heny, Frank, and Barry Richards. Linguistic Categories: Auxiliaries and Related Puzzles: Volume One: Categories. Dordrecht: Springer Netherlands, 1983.

MLA (9th ed.) Citation

Heny, Frank, and Barry Richards. Linguistic Categories: Auxiliaries and Related Puzzles: Volume One: Categories. Springer Netherlands, 1983.