Cita APA (7th ed.)

Norman, N. (1997). Periodicity and the s-and p-block elements. Univ. Pr..

Cita Chicago (17th ed.)

Norman, N.C. Periodicity and the S-and P-block Elements. Oxford: Univ. Pr., 1997.

Cita MLA (9th ed.)

Norman, N.C. Periodicity and the S-and P-block Elements. Univ. Pr., 1997.