Gschneidner, Karl A.
Handbook on the physics and chemistry of rare earths : volume 24
Elsiver Science, 1997
 Buku Referensi
Handbook on the physics and chemistry of rare earths : volume 5
editor, A. Gschneidner, LeRoy Eyring
North-Holland, 1982
 Buku Referensi
Rare earths : science, technology, production and use
Jacques Lucas ... [and four others]
Elsevier, 2015
 Buku Teks SO
Earths history, structure and materials / Edited, Brian J. Skinner
William Kaufman, 1980
 Buku Teks
Handbook on the physics and chemistry of rare earths : volume 1, metals
editor, Karl A. Gschneidner, LeRoy Eyring
North-Holland, 1982
 Buku Referensi