Gaya APA

Pai, A, C., Roberts, H, M. (1981). Genetics its concepts and implications . Englewood Cliffs, NJ: Prentice-Hall.

Gaya MLA

Pai, Anna, C.., Roberts, Helen, Marcus. "Genetics its concepts and implications". Englewood Cliffs, NJ: Prentice-Hall, 1981. Text.