Copenhagen : Munksgaard, 1965

Bethesda, Md. : The Library, 1978
4th ed.

Bethesda, Md. : [For sale by the Superintendent of Documents, U. S. Govt. Print. Off., Washington], 1964
3d ed.

New Haven, Human Relations Area Files, 1963
3d ed., rev.

Washington : U.S. Govt. Print. Off, 1956
2d ed.

Westport, Conn. : Libraries Unlimited, 2005
22nd edition.

London : New York : C. Bingley ; K.G. Saur, 1979

Lanham, Maryland : Rowman & Littlefield Publishers, Inc., 2016
Fourth edition.

Bethesda : U.S. Department of Health and Human Services, Public Health Service, National Institutes of Health, National Library of Medicine, 1994
5th ed., 1994.

South Hackensack, N.J., Published for American Association of Law Libraries by F.B. Rothman, 1972

Albany, N.Y. : Forest Press, a division of OCLC Online Computer Library Center, 1989
Ed. 20 /

Chicago : American Library Association, 1968

New Brunswick, N.J., Graduate School of Library Service, Rutgers, The State Univ., 1966

Lanham, Md. : Scarecrow Press, 2000

London : H. K. Lewis, 1955
2d ed.

Westport, Conn. : Libraries Unlimited, 2004
Rev. 9th ed. /

Washington : U.S. Govt. Print. Off, 1951
1st ed.

Nashville : Vanderbilt University Press, 1955
4th ed., rev. and enl.

[Washington] NCR Microcard Editions, 1972

I.M.C.E. : Université de Montréal, 1964
[4th ed.].