APA-ийн эшлэл(7 дахь хэвлэлт)

Sorensen, D. C., & Wets, R. J. B. (1982). Nondifferential and variational techniques in optimization. North-Holland.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Sorensen, D. C., ба R. J. B. Wets. Nondifferential and Variational Techniques in Optimization. Amsterdam: North-Holland, 1982.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Sorensen, D. C., ба R. J. B. Wets. Nondifferential and Variational Techniques in Optimization. North-Holland, 1982.