Gaya APA
Abels,Harriette Sheffer. (2000).
Silent Invaders .
USA:
Crestwood House.
Gaya Chicago
Abels,Harriette Sheffer.
Silent Invaders.
USA:
Crestwood House,
2000.
Text.
Gaya MLA
Abels,Harriette Sheffer.
Silent Invaders.
USA:
Crestwood House,
2000.
Text.
Gaya Turabian
Abels,Harriette Sheffer.
Silent Invaders.
USA:
Crestwood House,
2000.
Print.