Gaya APA
Semangun,Haryono, . (1992).
Host indekx of plant diseases in Indonesia .
Yogyakarta:
Gajamada University Press.
Gaya MLA
Semangun,Haryono, .
"Host indekx of plant diseases in Indonesia".
Yogyakarta:
Gajamada University Press,
1992.
Textbook.