Gaya APA
Monthly Bulletin of the Hawaiian Volcano observatory Vol. VIII Honolulu, Hawaii, January, 1920 No. 1. ().
HAWAII:
U.S Departement of Agriculture.
Gaya MLA
Monthly Bulletin of the Hawaiian Volcano observatory Vol. VIII Honolulu, Hawaii, January, 1920 No. 1.
.
HAWAII:
U.S Departement of Agriculture,
.
.