Dougill, Peter
Open University Press, 1993
Buku Teks
Pritchard, Peter.,
Oxford University Press, 1994
Buku Teks
Viemeister, Peter E.
Doubleday, 1961
Buku Teks
Freuchen, Peter
Messner, 1957
Buku Teks
Ur, Penny, author
Cambridge University Press, 1999
Buku Referensi