Martin, L. P. Prevention of water pollution by Benguet mines. Saint Louis University research journal.
Chicago-viite (17. p.)Martin, Laurence P. "Prevention of Water Pollution by Benguet Mines." Saint Louis University Research Journal .
MLA-viite (9. p.)Martin, Laurence P. "Prevention of Water Pollution by Benguet Mines." Saint Louis University Research Journal, .
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.