Gaya APA

Singer, F., Pytel, A. (1986). Kunci jawaban soal-soal kekuatan bahan (Strength of materials) : Ferdinand L. Singer, Andrew Pytel . Jakarta: Erlangga.

Gaya MLA

Singer, Ferdinand., Pytel, Andrew. "Kunci jawaban soal-soal kekuatan bahan (Strength of materials) : Ferdinand L. Singer, Andrew Pytel". Jakarta: Erlangga, 1986. Buku.