Gaya APA
Obruchev, V.. (1959).
Fundamentals of Geology : Popular Outline .
Moscow:
Foreign Languages Publishing House.
Gaya Chicago
Obruchev, V..
Fundamentals of Geology : Popular Outline.
Moscow:
Foreign Languages Publishing House,
1959.
Teks.
Gaya MLA
Obruchev, V..
Fundamentals of Geology : Popular Outline.
Moscow:
Foreign Languages Publishing House,
1959.
Teks.
Gaya Turabian
Obruchev, V..
Fundamentals of Geology : Popular Outline.
Moscow:
Foreign Languages Publishing House,
1959.
Teks.