Gaya APA
Railroad track: Theory and practice. (1977).
New York:
Frederick Ungar Publishing.
Gaya Chicago
Railroad track: Theory and practice.
text.
New York:
Frederick Ungar Publishing,
1977.
Tesis.
Gaya MLA
Railroad track: Theory and practice.
text.
New York:
Frederick Ungar Publishing,
1977.
Tesis.
Gaya Turabian
Railroad track: Theory and practice.
New York:
Frederick Ungar Publishing,
1977.
Tesis.