Gaya APA
Spencer, Edgar W.. (1977).
Introduction to the structure of the earth / Edgar W. Spencer (2nd ed.).
:
McGraw-Hill Book.
Gaya Chicago
Spencer, Edgar W..
Introduction to the structure of the earth / Edgar W. Spencer.
2nd ed.
:
McGraw-Hill Book,
1977.
Text.
Gaya MLA
Spencer, Edgar W..
Introduction to the structure of the earth / Edgar W. Spencer.
2nd ed.
:
McGraw-Hill Book,
1977.
Text.
Gaya Turabian
Spencer, Edgar W..
Introduction to the structure of the earth / Edgar W. Spencer.
2nd ed.
:
McGraw-Hill Book,
1977.
Print.