APA Format
Widyastuti, Yustina Erna,1966-; Krisriwati, Regina. (1994).
Duku :jenis dan budidaya /Yustina Erna Widyastuti, Regina Kristiawati
. Jakarta :: Penebar Swadaya,.
MLA Format
Widyastuti, Yustina Erna,1966-; Krisriwati, Regina.
Duku :jenis dan budidaya /Yustina Erna Widyastuti, Regina Kristiawati
. Jakarta :: Penebar Swadaya,, 1994
Chicago Format
Widyastuti, Yustina Erna,1966-; Krisriwati, Regina. Duku :jenis dan budidaya /Yustina Erna Widyastuti, Regina Kristiawati. Jakarta :: Penebar Swadaya,, 1994.