Gaya APA
kamp, P, V, D.
(1967).
Principles of Astromentary
(
may 1966)
.
America:
peter van de kamp.
Gaya MLA
kamp, Peter, Van, De.
"Principles of Astromentary".
may 1966
America:
peter van de kamp,
1967.
Buku.