Gaya APA
Singer, Michael J.. (1987).
Soils an introduction (text).
New York:
Macmillan Publishing.
Gaya Chicago
Singer, Michael J..
Soils an introduction.
text
New York:
Macmillan Publishing,
1987.
Tesis.
Gaya MLA
Singer, Michael J..
Soils an introduction.
text
New York:
Macmillan Publishing,
1987.
Tesis.
Gaya Turabian
Singer, Michael J..
Soils an introduction.
text
New York:
Macmillan Publishing,
1987.
Tesis.