Gaya APA
Pussell, Sarah. (1993).
Keanekaragaman Hayati (1993) .
Switzerland:
WWF.
Gaya Chicago
Pussell, Sarah.
Keanekaragaman Hayati (1993).
Switzerland:
WWF,
1993.
Printed Book.
Gaya MLA
Pussell, Sarah.
Keanekaragaman Hayati (1993).
Switzerland:
WWF,
1993.
Printed Book.
Gaya Turabian
Pussell, Sarah.
Keanekaragaman Hayati (1993).
Switzerland:
WWF,
1993.
Printed Book.