Gaya APA
Wright, S, R, A, H.
(1955).
The Crust Of The Earth
(
Pertama)
.
New York:
A Signet Key Book.
Gaya MLA
Wright, Samuel, Rapport, And, Helen.
"The Crust Of The Earth".
Pertama
New York:
A Signet Key Book,
1955.
Text.