Rogers, G.F.C. (Gordon Frederick Crichton), author
Longmans, 1967
Buku Teks
Raitt, Gordon, author
Cambridge University Press, 1992
Buku Teks
Rogers, G.F.C. (Gordon Frederick Crichton), author
ELBS and Longmann, 1970
Buku Teks
Rao, Chandra Gopala, author
CRC Press, Taylor & Francis Group, 2009
Buku Teks
Skogestad, Sigurd, author
CRC Press, 2009
Buku Teks