APA-ийн эшлэл(7 дахь хэвлэлт)
(1961). Specialized Science Information Services in the United States: A directory of select, specialized information services in the physical and biological sciences. National Science Foundation.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)
Specialized Science Information Services in the United States: A Directory of Select, Specialized Information Services in the Physical and Biological Sciences. Washington: National Science Foundation, 1961.
MLA -ийн эшлэл (9 дэх хэвлэлт)
Specialized Science Information Services in the United States: A Directory of Select, Specialized Information Services in the Physical and Biological Sciences. National Science Foundation, 1961.
Анхааруулга: Эдгээр ишлэлүүд үргэлж 100% үнэн зөв биш байж магадгүй.