Gaya APA
Maynard, C.
(1974).
Planet Bumi: Pustaka Pengetahuan Modern
.
London:
Grisewood & Dempsey Ltd..
Gaya MLA
Maynard, Christopher.
"Planet Bumi: Pustaka Pengetahuan Modern".
London:
Grisewood & Dempsey Ltd.,
1974.
Text.