Gaya APA
Spectrum : Science Test Practice Grade 6. ().
Singapura:
Spectrum.
Gaya Chicago
Spectrum : Science Test Practice Grade 6.
.
Singapura:
Spectrum,
.
Text.
Gaya MLA
Spectrum : Science Test Practice Grade 6.
.
Singapura:
Spectrum,
.
Text.
Gaya Turabian
Spectrum : Science Test Practice Grade 6.
Singapura:
Spectrum,
.
Print.