Gaya APA
Nelwan, . (1992).
Typhoid Fever : Profile, Diagnosis, And Treatment In The 1990s .
Jakarta:
Fakultas Ekonomi Universitas Indonesia.
Gaya MLA
Nelwan, .
"Typhoid Fever : Profile, Diagnosis, And Treatment In The 1990s".
Jakarta:
Fakultas Ekonomi Universitas Indonesia,
1992.
Textbook.