Rydhmer, L. (1993). Pig reproductive genetics: And correlations between reproduction and production traits. Sveriges lantbruksuniversitet.
Chicago-referens (17:e uppl.)Rydhmer, Lotta. Pig Reproductive Genetics: And Correlations Between Reproduction and Production Traits. Uppsala: Sveriges lantbruksuniversitet, 1993.
MLA-referens (8:e uppl.)Rydhmer, Lotta. Pig Reproductive Genetics: And Correlations Between Reproduction and Production Traits. Sveriges lantbruksuniversitet, 1993.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.