Gaya APA
Singer, F, L., Pytel, A. (1986).
Kunci/Jawaban Soal-Soal Kekuatan Bahan (Strength of Materials) .
Jakarta:
Erlangga.
Gaya MLA
Singer, Ferdinand, L.., Pytel, Andrew.
"Kunci/Jawaban Soal-Soal Kekuatan Bahan (Strength of Materials)".
Jakarta:
Erlangga,
1986.
Text.