APA-ийн эшлэл(7 дахь хэвлэлт)

Barford, W., & Bursill, R. (1997). Density matrix renormalisation group calculations of molecular exciton energies in poly(p-phenylene vinylene).

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Barford, W., ба R. Bursill. Density Matrix Renormalisation Group Calculations of Molecular Exciton Energies in Poly(p-phenylene Vinylene). 1997.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Barford, W., ба R. Bursill. Density Matrix Renormalisation Group Calculations of Molecular Exciton Energies in Poly(p-phenylene Vinylene). 1997.