Cancer: Principles and Practice of Oncology by "The following texts are essential to provide a detailed knowledge base in oncology," from the ACVIM Oncology Reading List.
Withrow and MacEwen's Small Animal Clinical Oncology by 
Cancer Chemotherapy and Biotherapy by 
Basic Science of Oncology by 
Cellular and Molecular Immunology by 
Tumors in Domestic Animals by 
The Biology of Cancer by "The following texts have chapters or sections that have more detail and/or different persepectives on important topics that are also found elsewhere," the ACVIM Oncology Reading List.
Kirk's Current Veterinary Therapy XIII, Small Animal Practice by 
Kirk's Current Veterinary Therapy XIV by 
Kirk's Current Veterinary Therapy XV by 
Canine and Feline Endocrinology and Reproduction by 
Diagnostic Cytology and Hematology of the Dog and Cat by 
Canine and Feline Cytology: A Color Atlas and Interpretation Guide by 
Radiobiology for the Radiologist by 
Managing the Canine Cancer Patient by 
Cancer management in small animal practice by 
Duncan and Prasse's Veterinary Laboratory Medicine by "The following texts are resource for specialized information that is not available elsewhere, or contain information complementary to that in Group 1," the ACVIM Oncology Reading List.
Schalm's Veterinary Hematology by 
Biostatistics by 
