Unger, L. M.; Sargent, R. C. (1988). "Allopaternal Care in the Fathead Minnow, Pimephales promelas: Females Prefer Males with Eggs". Behavioral Ecology and Sociobiology. 23 (1): 27–32. doi:10.1007/BF00303054. ISSN0340-5443. JSTOR4600182.
Unger, L. M.; Sargent, R. C. (1988). "Allopaternal Care in the Fathead Minnow, Pimephales promelas: Females Prefer Males with Eggs". Behavioral Ecology and Sociobiology. 23 (1): 27–32. doi:10.1007/BF00303054. ISSN0340-5443. JSTOR4600182.
Unger, L. M.; Sargent, R. C. (1988). "Allopaternal Care in the Fathead Minnow, Pimephales promelas: Females Prefer Males with Eggs". Behavioral Ecology and Sociobiology. 23 (1): 27–32. doi:10.1007/BF00303054. ISSN0340-5443. JSTOR4600182.