Press, Frank
Earth
W H Freeman , 1974
Buku Teks
Newman, Margaret A.
Health as expanding conciousness
C.V. Mosby, 1986
Buku Teks SO
Blodgett, Ralp H.
Our expanding economy an introduction
Rinehart, 1959
Buku Teks
Singer, Peter
The expanding circle : ethics and sociobiology
Farrar, Straus & Giroux, 1982
Buku Teks SO
Expanding Internationally-OCLC gears up
Artikel Jurnal