Παραπομπή σε μορφή APA (7η εκδ.)

Butterfield, R., Houlsby, G., & Gottardi, G. (1998). Standardized sign conventions and notation for generally loaded foundations (vol 47, pg 1051, 1997).

Παραπομπή σε μορφή Chicago (17η εκδ.)

Butterfield, R., G. Houlsby, και G. Gottardi. Standardized Sign Conventions and Notation for Generally Loaded Foundations (vol 47, Pg 1051, 1997). 1998.

Παραπομπή σε μορφή MLA (9th εκδ.)

Butterfield, R., et al. Standardized Sign Conventions and Notation for Generally Loaded Foundations (vol 47, Pg 1051, 1997). 1998.