Davies, Helen; Dorfman, Marjorie; Fons, Mary; Hawkins, Deborah; Hintz, Martin; Lundgren, Linnea; Priess, David; Clark Robinson, Julia; Seaburn, Paul; Stevens, Heidi; Theunissen, Steve (). „21 Best-Selling Books of All Time”. Editors of Publications International, Ltd. Arhivat din originalul de la . Accesat în .
Davies, Helen; Dorfman, Marjorie; Fons, Mary; Hawkins, Deborah; Hintz, Martin; Lundgren, Linnea; Priess, David; Clark Robinson, Julia; Seaburn, Paul; Stevens, Heidi; Theunissen, Steve (). „21 Best-Selling Books of All Time”. Editors of Publications International, Ltd. Arhivat din original la . Accesat în .
Davies, Helen; Dorfman, Marjorie; Fons, Mary; Hawkins, Deborah; Hintz, Martin; Lundgren, Linnea; Priess, David; Clark Robinson, Julia; Seaburn, Paul; Stevens, Heidi; Theunissen, Steve (). „21 Best-Selling Books of All Time”. Editors of Publications International, Ltd. Arhivat din originalul de la . Accesat în .
Davies, Helen; Dorfman, Marjorie; Fons, Mary; Hawkins, Deborah; Hintz, Martin; Lundgren, Linnea; Priess, David; Clark Robinson, Julia; Seaburn, Paul; Stevens, Heidi; Theunissen, Steve (). „21 Best-Selling Books of All Time”. Editors of Publications International, Ltd. Arhivat din original la . Accesat în .