Berlage, H. P., & Singelenberg, P. (1969). H. P. Berlage: P. Singelenberg. Meulenhoff.
Lua i Stíl Chicago (17ú heag.)Berlage, Hendrik Petrus, agus Pieter Singelenberg. H. P. Berlage: P. Singelenberg. Amsterdam: Meulenhoff, 1969.
Lua MLA (8ú heag.)Berlage, Hendrik Petrus, agus Pieter Singelenberg. H. P. Berlage: P. Singelenberg. Meulenhoff, 1969.
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