Gaya APA

Birch, B., Gretiani, S. (1992). Alexander Fleming : Penisilin (Cet. 1.--). Jakarta: Gramedia.

Gaya MLA

Birch, Beverley., Gretiani, Siti. "Alexander Fleming : Penisilin". Cet. 1.-- Jakarta: Gramedia, 1992. Text.