Björkman, E. (1970). Plant condition and plant growth: Planting experiments with spruce (Picea abies (L.) Karst.) on Calluna heath land. Plantkondition och tillväxt. Planteringsförsök med gran på ljunghedar. Royal College of Forestry.
Citação do estilo Chicago (17ª ed.)Björkman, Erik. Plant Condition and Plant Growth: Planting Experiments with Spruce (Picea Abies (L.) Karst.) on Calluna Heath Land. Plantkondition Och Tillväxt. Planteringsförsök Med Gran På Ljunghedar. Stockholm: Royal College of Forestry, 1970.
Citação MLA (8ª ed.)Björkman, Erik. Plant Condition and Plant Growth: Planting Experiments with Spruce (Picea Abies (L.) Karst.) on Calluna Heath Land. Plantkondition Och Tillväxt. Planteringsförsök Med Gran På Ljunghedar. Royal College of Forestry, 1970.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.