Perks, S. (1905). Residential flats of all classes, including artisans' dwellings: A practical treatise on their planning and arrangement, together with chapters on their history, financial matters, etc., with numerous illustrations. B.T. Batsford.

Perks, Sydney. Residential Flats of All Classes, Including Artisans' Dwellings: A Practical Treatise on Their Planning and Arrangement, Together with Chapters on Their History, Financial Matters, Etc., with Numerous Illustrations. London: B.T. Batsford, 1905.

Perks, Sydney. Residential Flats of All Classes, Including Artisans' Dwellings: A Practical Treatise on Their Planning and Arrangement, Together with Chapters on Their History, Financial Matters, Etc., with Numerous Illustrations. B.T. Batsford, 1905.