Watkins, F., Dillingham, W. Practical English Handbook. Boston: Houghton Mifflin Company, 1996 551 p. 0-395-73334-0.
Watkins, F., Dillingham, W. Practical English Handbook. Boston: Houghton Mifflin Company, 1996 551 p. 0-395-73334-0.
Watkins, F., Dillingham, W. (1996) Practical English Handbook, Boston: Houghton Mifflin Company 551 p. 0-395-73334-0.
Watkins, F., & Dillingham, W. (1996). Practical English Handbook. Instructor's Annotated Edition. Boston: Houghton Mifflin Company, 551 p.
Watkins F, Dillingham W. Practical English Handbook: Instructor's Annotated Edition. Boston: Houghton Mifflin Company; 1996. p. 551 p. ISBN: 0-395-73334-0.