APA Style
Lapp, Ralph Eugene, 1917-, Escalona, Jorge. (1981).
Materia .
México, D.F:
Time-Life.
Chicago Style
Lapp, Ralph Eugene, 1917-, Escalona, Jorge.
Materia.
México, D.F:
Time-Life,
1981.
Libro.
MLA Style
Lapp, Ralph Eugene, 1917-, Escalona, Jorge.
Materia.
México, D.F:
Time-Life,
1981.
Libro.
Turabian Style
Lapp, Ralph Eugene, 1917-, Escalona, Jorge.
Materia.
México, D.F:
Time-Life,
1981.
Libro.