(1921). Circular: Guam Agricultural Experiment Station. Under the supervision of the States Relations Service, Office of Experiment Stations, U.S. Department of Agriculture. Government Printing Office.
Chicago-Zitierstil (17. Ausg.)Circular: Guam Agricultural Experiment Station. Under the Supervision of the States Relations Service, Office of Experiment Stations, U.S. Department of Agriculture. Washington: Government Printing Office, 1921.
MLA-Zitierstil (9. Ausg.)Circular: Guam Agricultural Experiment Station. Under the Supervision of the States Relations Service, Office of Experiment Stations, U.S. Department of Agriculture. Government Printing Office, 1921.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.