APA-ийн эшлэл(7 дахь хэвлэлт)

HARNWELL, G. P., & Gaylord P. HARNWELL. (1949). Principles of electricity and electromagnetism. 2nd ed. McGraw-Hill.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

HARNWELL, Gaylord P., ба Gaylord P. HARNWELL. Principles of Electricity and Electromagnetism. 2nd Ed. New York: McGraw-Hill, 1949.

MLA -ийн эшлэл (9 дэх хэвлэлт)

HARNWELL, Gaylord P., ба Gaylord P. HARNWELL. Principles of Electricity and Electromagnetism. 2nd Ed. McGraw-Hill, 1949.