Gaya APA
Beus, A., Grigorian, S. (1977).
Geochemical Exploration Methods For Mineral Deposits .
Illinois:
Applied Plublishing Ltd.
Gaya MLA
Beus, A.A.., Grigorian, S.V..
"Geochemical Exploration Methods For Mineral Deposits".
Illinois:
Applied Plublishing Ltd,
1977.
Text.