APA

O'Neill M., Chen A. & Murray N. E. (19980202). The restriction-modification genes of Escherichia coli K-12 may not be selfish: they do not resist loss and are readily replaced by alleles conferring different specificities. : Proceedings of the National Academy of Sciences of the United States of America.

Chicago

O'Neill M, Chen A and Murray N E. 19980202. The restriction-modification genes of Escherichia coli K-12 may not be selfish: they do not resist loss and are readily replaced by alleles conferring different specificities. : Proceedings of the National Academy of Sciences of the United States of America.

Harvard

O'Neill M., Chen A. and Murray N. E. (19980202). The restriction-modification genes of Escherichia coli K-12 may not be selfish: they do not resist loss and are readily replaced by alleles conferring different specificities. : Proceedings of the National Academy of Sciences of the United States of America.

MLA

O'Neill M, Chen A and Murray N E. The restriction-modification genes of Escherichia coli K-12 may not be selfish: they do not resist loss and are readily replaced by alleles conferring different specificities. : Proceedings of the National Academy of Sciences of the United States of America. 19980202.