Gaya APA
Soewignjo, S., Stephanus, G. (1999).
Hepatitis virus B / Soewignjo Soemohardjo, Stephanus Gunawan .
Jakarta:
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Gaya MLA
Soemohardjo, Soewignjo., Gunawan, Stephanus.
"Hepatitis virus B / Soewignjo Soemohardjo, Stephanus Gunawan".
Jakarta:
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1999.
Textbook.