Gaya APA
Heri Purwanto,dkk. ().
Kalkulus .
Malang:
Ercon Biang Prestasi.
Gaya Chicago
Heri Purwanto,dkk.
Kalkulus.
Malang:
Ercon Biang Prestasi,
.
Text.
Gaya MLA
Heri Purwanto,dkk.
Kalkulus.
Malang:
Ercon Biang Prestasi,
.
Text.
Gaya Turabian
Heri Purwanto,dkk.
Kalkulus.
Malang:
Ercon Biang Prestasi,
.
Print.