Trump, Ivanka, 1981-, author
Penguin, 2017
Buku Teks
Europa Publication Limited, 1992
Buku Referensi
Langford, Beverly Y., author
American Management Association, 2005
eBooks
Brause, Rita S., author
RoutledgeFalmer , 2000
Buku Teks
edited by Jane Eldridge Miller
Routledge, 2001
Buku Referensi